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  • My thoughts on the future of the web with respect to flash, plugins, etc…

    - by joelvarty
    More than 10 years ago I was coding Java applets.  They were great at the time because I could reasonably expect them to run the same way in Netscape and Internet Explorer.  I could also reliably do asynchronous networking back to the server.  But then, Microsoft pulled their native Java runtime from Windows and Internet Explorer.  It got a lot harder to get applets running in people’s browsers. So I started writing ActiveX controls for IE and Java applets for Netscape. Then I switched to Flash, not for too long, but it was enough for me to see that it was a capable and curious implementation of animation, multimedia and script. I even wrote a few Silverlight controls, but then I stopped. I stepped back from all of the “richness” and “interactivity” and I thought about things like accessibility and SEO.  I wondered how my apps and sites might appear to the greater world.  I wondered how the developers I am working with, or who might be inheriting my code down the road, might interact with it. And I thought to myself, What the hell was I thinking? Those embedded controls are not what the web is about, and they run contrary to nearly all of the things that makes the web exciting and fosters innovation within and around.   Those plugins or controls, or whatever you want to refer to them as, are only stop-gaps that fill a hole in the basic HTML/Script/CSS specifications, and that’s all they should ever be used for.  Full stop.  Period.  For instance, I still make use of a nifty little flash control called SWFUpload because it lets me check file size before an upload starts.  I can do the same thing from a Silverlight control.  But rest assured, if I could do this from native javascript, I would in a second.  In fact, the only reason I chose SWFUpload over a ton of other alternatives is that it has a great javascript API so I can do (nearly) all of the UI in regular HTML.  And I ALWAYS provide a non-flash alternative for uploading, and for the rest of any website where the designer has insisted on some piece of creativity that requires flash (usually because the designer is also the flash developer, but that’s an aside…). The web is about openness, and about exposing that openness in such a way that it can be taken advantage of as a small part of a greater whole.  Sure we need security and authentication and ssl and all that stuff, but for me, its something more profound.  For me, the majority of what the web is, is about exposing something that delivers meaning.  What meaning can we derive from an <object> tag?   more later - joel

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  • Java fatal error, don't know what it means

    - by Thomas King
    It happens at the same place in my code (albeit not the first time the method is executed) but I can't make head or tail of what is wrong. (Doubly so as it's code for a robot). Be most appreciative if someone can give me an idea of what kind of problem it is. I assume it's to do with threading (multi-threaded app) but I don't really know what?!? Worried as deadline for uni project is looming!!! The message: # A fatal error has been detected by the Java Runtime Environment: # SIGSEGV (0xb) at pc=0xb70f0ca7, pid=5065, tid=2145643376 # JRE version: 6.0_15-b03 Java VM: Java HotSpot(TM) Server VM (14.1-b02 mixed mode linux-x86 ) Problematic frame: V [libjvm.so+0x4c9ca7] # An error report file with more information is saved as: /home/thomas/workspace/sir13/hs_err_pid5065.log # If you would like to submit a bug report, please visit: http://java.sun.com/webapps/bugreport/crash.jsp # The log: # A fatal error has been detected by the Java Runtime Environment: # SIGSEGV (0xb) at pc=0xb70f0ca7, pid=5065, tid=2145643376 # JRE version: 6.0_15-b03 Java VM: Java HotSpot(TM) Server VM (14.1-b02 mixed mode linux-x86 ) Problematic frame: V [libjvm.so+0x4c9ca7] # If you would like to submit a bug report, please visit: http://java.sun.com/webapps/bugreport/crash.jsp # --------------- T H R E A D --------------- Current thread (0x0904ec00): JavaThread "CompilerThread1" daemon [_thread_in_native, id=5078, stack(0x7fdbe000,0x7fe3f000)] siginfo:si_signo=SIGSEGV: si_errno=0, si_code=1 (SEGV_MAPERR), si_addr=0x00000004 Registers: EAX=0x00000000, EBX=0xb733d720, ECX=0x000003b4, EDX=0x00000000 ESP=0x7fe3bf30, EBP=0x7fe3bf78, ESI=0x7fe3c250, EDI=0x7e9a7790 EIP=0xb70f0ca7, CR2=0x00000004, EFLAGS=0x00010283 Top of Stack: (sp=0x7fe3bf30) 0x7fe3bf30: 00020008 7ec8de5c 7fe3c250 00000000 0x7fe3bf40: 7f610451 00001803 7e9a7790 000003f5 0x7fe3bf50: 7e920030 7f239910 7f23b349 7f23b348 0x7fe3bf60: 7f550e35 7fe3c250 0000021b b733d720 0x7fe3bf70: 000003bc 7f23db10 7fe3bfc8 b70f0997 0x7fe3bf80: 7fe3c240 7f23db10 00000000 00000002 0x7fe3bf90: 00000000 7fe3c1b0 00000000 00000000 0x7fe3bfa0: 00004000 00000020 7ec88870 00000002 Instructions: (pc=0xb70f0ca7) 0xb70f0c97: 7d 08 8b 87 c8 02 00 00 89 c7 8b 45 c4 8b 14 87 0xb70f0ca7: 8b 42 04 8b 00 85 c0 75 22 8b 4e 04 8b 52 1c 39 Stack: [0x7fdbe000,0x7fe3f000], sp=0x7fe3bf30, free space=503k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0x4c9ca7] V [libjvm.so+0x4c9997] V [libjvm.so+0x4c6e23] V [libjvm.so+0x25b75f] V [libjvm.so+0x2585df] V [libjvm.so+0x1f2c2f] V [libjvm.so+0x260ceb] V [libjvm.so+0x260609] V [libjvm.so+0x617286] V [libjvm.so+0x6108fe] V [libjvm.so+0x531c4e] C [libpthread.so.0+0x580e] Current CompileTask: C2:133 ! BehaviourLeftUnexplored.action()V (326 bytes) --------------- P R O C E S S --------------- Java Threads: ( = current thread ) 0x08fb5400 JavaThread "DestroyJavaVM" [_thread_blocked, id=5066, stack(0xb6bb0000,0xb6c01000)] 0x09213c00 JavaThread "Thread-4" [_thread_blocked, id=5085, stack(0x7eeaf000,0x7ef00000)] 0x09212c00 JavaThread "Thread-3" [_thread_in_Java, id=5084, stack(0x7f863000,0x7f8b4000)] 0x09206800 JavaThread "AWT-XAWT" daemon [_thread_in_native, id=5083, stack(0x7f8b4000,0x7f905000)] 0x091b7400 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=5082, stack(0x7f93e000,0x7f98f000)] 0x09163c00 JavaThread "Thread-0" [_thread_in_native, id=5081, stack(0x7fc87000,0x7fcd8000)] 0x09050c00 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=5079, stack(0x7fd6d000,0x7fdbe000)] =0x0904ec00 JavaThread "CompilerThread1" daemon [_thread_in_native, id=5078, stack(0x7fdbe000,0x7fe3f000)] 0x0904c000 JavaThread "CompilerThread0" daemon [_thread_blocked, id=5077, stack(0x7fe3f000,0x7fec0000)] 0x0904a800 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=5076, stack(0x7fec0000,0x7ff11000)] 0x09036c00 JavaThread "Finalizer" daemon [_thread_blocked, id=5075, stack(0x7ff57000,0x7ffa8000)] 0x09035400 JavaThread "Reference Handler" daemon [_thread_blocked, id=5074, stack(0x7ffa8000,0x7fff9000)] Other Threads: 0x09031400 VMThread [stack: 0x7fff9000,0x8007a000] [id=5073] 0x09052800 WatcherThread [stack: 0x7fcec000,0x7fd6d000] [id=5080] VM state:not at safepoint (normal execution) VM Mutex/Monitor currently owned by a thread: None Heap PSYoungGen total 46784K, used 32032K [0xae650000, 0xb3440000, 0xb3a50000) eden space 46720K, 68% used [0xae650000,0xb0588f48,0xb13f0000) from space 64K, 95% used [0xb3390000,0xb339f428,0xb33a0000) to space 384K, 0% used [0xb33e0000,0xb33e0000,0xb3440000) PSOldGen total 43008K, used 20872K [0x84650000, 0x87050000, 0xae650000) object space 43008K, 48% used [0x84650000,0x85ab2308,0x87050000) PSPermGen total 16384K, used 5115K [0x80650000, 0x81650000, 0x84650000) object space 16384K, 31% used [0x80650000,0x80b4ec30,0x81650000) Dynamic libraries: 08048000-08052000 r-xp 00000000 08:05 34708 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/bin/java 08052000-08053000 rwxp 00009000 08:05 34708 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/bin/java 08faf000-09220000 rwxp 00000000 00:00 0 [heap] 7e900000-7e9f9000 rwxp 00000000 00:00 0 7e9f9000-7ea00000 ---p 00000000 00:00 0 7ea00000-7ea41000 rwxp 00000000 00:00 0 7ea41000-7eb00000 ---p 00000000 00:00 0 7eb00000-7ebfc000 rwxp 00000000 00:00 0 7ebfc000-7ec00000 ---p 00000000 00:00 0 7ec00000-7ecf7000 rwxp 00000000 00:00 0 7ecf7000-7ed00000 ---p 00000000 00:00 0 7ed00000-7ede7000 rwxp 00000000 00:00 0 7ede7000-7ee00000 ---p 00000000 00:00 0 7eeaf000-7eeb2000 ---p 00000000 00:00 0 7eeb2000-7ef00000 rwxp 00000000 00:00 0 7ef00000-7eff9000 rwxp 00000000 00:00 0 7eff9000-7f000000 ---p 00000000 00:00 0 7f100000-7f1f6000 rwxp 00000000 00:00 0 7f1f6000-7f200000 ---p 00000000 00:00 0 7f200000-7f2fc000 rwxp 00000000 00:00 0 7f2fc000-7f300000 ---p 00000000 00:00 0 7f300000-7f4fe000 rwxp 00000000 00:00 0 7f4fe000-7f500000 ---p 00000000 00:00 0 7f500000-7f5fb000 rwxp 00000000 00:00 0 7f5fb000-7f600000 ---p 00000000 00:00 0 7f600000-7f6f9000 rwxp 00000000 00:00 0 7f6f9000-7f700000 ---p 00000000 00:00 0 7f700000-7f800000 rwxp 00000000 00:00 0 7f830000-7f836000 r-xs 00000000 08:05 241611 /var/cache/fontconfig/945677eb7aeaf62f1d50efc3fb3ec7d8-x86.cache-2 7f836000-7f838000 r-xs 00000000 08:05 241612 /var/cache/fontconfig/99e8ed0e538f840c565b6ed5dad60d56-x86.cache-2 7f838000-7f83b000 r-xs 00000000 08:05 241620 /var/cache/fontconfig/e383d7ea5fbe662a33d9b44caf393297-x86.cache-2 7f83b000-7f846000 r-xs 00000000 08:05 241600 /var/cache/fontconfig/0f34bcd4b6ee430af32735b75db7f02b-x86.cache-2 7f863000-7f866000 ---p 00000000 00:00 0 7f866000-7f8b4000 rwxp 00000000 00:00 0 7f8b4000-7f8b7000 ---p 00000000 00:00 0 7f8b7000-7f905000 rwxp 00000000 00:00 0 7f905000-7f909000 r-xp 00000000 08:05 5012 /usr/lib/libXfixes.so.3.1.0 7f909000-7f90a000 r-xp 00003000 08:05 5012 /usr/lib/libXfixes.so.3.1.0 7f90a000-7f90b000 rwxp 00004000 08:05 5012 /usr/lib/libXfixes.so.3.1.0 7f90b000-7f913000 r-xp 00000000 08:05 5032 /usr/lib/libXrender.so.1.3.0 7f913000-7f914000 r-xp 00007000 08:05 5032 /usr/lib/libXrender.so.1.3.0 7f914000-7f915000 rwxp 00008000 08:05 5032 /usr/lib/libXrender.so.1.3.0 7f915000-7f91e000 r-xp 00000000 08:05 5004 /usr/lib/libXcursor.so.1.0.2 7f91e000-7f91f000 r-xp 00008000 08:05 5004 /usr/lib/libXcursor.so.1.0.2 7f91f000-7f920000 rwxp 00009000 08:05 5004 /usr/lib/libXcursor.so.1.0.2 7f92f000-7f931000 r-xs 00000000 08:05 241622 /var/cache/fontconfig/f24b2111ab8703b4e963115a8cf14259-x86.cache-2 7f931000-7f932000 r-xs 00000000 08:05 241606 /var/cache/fontconfig/4c73fe0c47614734b17d736dbde7580a-x86.cache-2 7f932000-7f936000 r-xs 00000000 08:05 241599 /var/cache/fontconfig/062808c12e6e608270f93bb230aed730-x86.cache-2 7f936000-7f93e000 r-xs 00000000 08:05 241617 /var/cache/fontconfig/d52a8644073d54c13679302ca1180695-x86.cache-2 7f93e000-7f941000 ---p 00000000 00:00 0 7f941000-7f98f000 rwxp 00000000 00:00 0 7f98f000-7fa0e000 r-xp 00000000 08:05 34755 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libfontmanager.so 7fa0e000-7fa19000 rwxp 0007e000 08:05 34755 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libfontmanager.so 7fa19000-7fa1d000 rwxp 00000000 00:00 0 7fa1d000-7fa21000 r-xp 00000000 08:05 5008 /usr/lib/libXdmcp.so.6.0.0 7fa21000-7fa22000 rwxp 00003000 08:05 5008 /usr/lib/libXdmcp.so.6.0.0 7fa22000-7fa3e000 r-xp 00000000 08:05 6029 /usr/lib/libxcb.so.1.1.0 7fa3e000-7fa3f000 r-xp 0001c000 08:05 6029 /usr/lib/libxcb.so.1.1.0 7fa3f000-7fa40000 rwxp 0001d000 08:05 6029 /usr/lib/libxcb.so.1.1.0 7fa40000-7fa42000 r-xp 00000000 08:05 4997 /usr/lib/libXau.so.6.0.0 7fa42000-7fa43000 r-xp 00001000 08:05 4997 /usr/lib/libXau.so.6.0.0 7fa43000-7fa44000 rwxp 00002000 08:05 4997 /usr/lib/libXau.so.6.0.0 7fa44000-7fb6e000 r-xp 00000000 08:05 4991 /usr/lib/libX11.so.6.2.0 7fb6e000-7fb6f000 ---p 0012a000 08:05 4991 /usr/lib/libX11.so.6.2.0 7fb6f000-7fb70000 r-xp 0012a000 08:05 4991 /usr/lib/libX11.so.6.2.0 7fb70000-7fb72000 rwxp 0012b000 08:05 4991 /usr/lib/libX11.so.6.2.0 7fb72000-7fb73000 rwxp 00000000 00:00 0 7fb73000-7fb81000 r-xp 00000000 08:05 5010 /usr/lib/libXext.so.6.4.0 7fb81000-7fb82000 r-xp 0000d000 08:05 5010 /usr/lib/libXext.so.6.4.0 7fb82000-7fb83000 rwxp 0000e000 08:05 5010 /usr/lib/libXext.so.6.4.0 7fb83000-7fb84000 r-xs 00000000 08:05 241614 /var/cache/fontconfig/c05880de57d1f5e948fdfacc138775d9-x86.cache-2 7fb84000-7fb87000 r-xs 00000000 08:05 241613 /var/cache/fontconfig/a755afe4a08bf5b97852ceb7400b47bc-x86.cache-2 7fb87000-7fb8a000 r-xs 00000000 08:05 241608 /var/cache/fontconfig/6d41288fd70b0be22e8c3a91e032eec0-x86.cache-2 7fb8a000-7fb92000 r-xs 00000000 08:05 219560 /var/cache/fontconfig/e13b20fdb08344e0e664864cc2ede53d-x86.cache-2 7fb92000-7fbd5000 r-xp 00000000 08:05 34752 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/xawt/libmawt.so 7fbd5000-7fbd7000 rwxp 00043000 08:05 34752 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/xawt/libmawt.so 7fbd7000-7fbd8000 rwxp 00000000 00:00 0 7fbd8000-7fc5c000 r-xp 00000000 08:05 34750 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libawt.so 7fc5c000-7fc63000 rwxp 00084000 08:05 34750 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libawt.so 7fc63000-7fc87000 rwxp 00000000 00:00 0 7fc87000-7fc8a000 ---p 00000000 00:00 0 7fc8a000-7fcd8000 rwxp 00000000 00:00 0 7fcd8000-7fceb000 r-xp 00000000 08:05 34739 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libnet.so 7fceb000-7fcec000 rwxp 00013000 08:05 34739 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libnet.so 7fcec000-7fced000 ---p 00000000 00:00 0 7fced000-7fd6d000 rwxp 00000000 00:00 0 7fd6d000-7fd70000 ---p 00000000 00:00 0 7fd70000-7fdbe000 rwxp 00000000 00:00 0 7fdbe000-7fdc1000 ---p 00000000 00:00 0 7fdc1000-7fe3f000 rwxp 00000000 00:00 0 7fe3f000-7fe42000 ---p 00000000 00:00 0 7fe42000-7fec0000 rwxp 00000000 00:00 0 7fec0000-7fec3000 ---p 00000000 00:00 0 7fec3000-7ff11000 rwxp 00000000 00:00 0 7ff11000-7ff18000 r-xs 00000000 08:05 134616 /usr/lib/gconv/gconv-modules.cache 7ff18000-7ff57000 r-xp 00000000 08:05 136279 /usr/lib/locale/en_GB.utf8/LC_CTYPE 7ff57000-7ff5a000 ---p 00000000 00:00 0 7ff5a000-7ffa8000 rwxp 00000000 00:00 0 7ffa8000-7ffab000 ---p 00000000 00:00 0 7ffab000-7fff9000 rwxp 00000000 00:00 0 7fff9000-7fffa000 ---p 00000000 00:00 0 7fffa000-800ad000 rwxp 00000000 00:00 0 800ad000-80243000 r-xs 02fb3000 08:05 34883 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/rt.jar 80243000-80244000 ---p 00000000 00:00 0 80244000-802c4000 rwxp 00000000 00:00 0 802c4000-802c5000 ---p 00000000 00:00 0 802c5000-8034d000 rwxp 00000000 00:00 0 8034d000-80365000 rwxp 00000000 00:00 0 80365000-8037a000 rwxp 00000000 00:00 0 8037a000-804b5000 rwxp 00000000 00:00 0 804b5000-804bd000 rwxp 00000000 00:00 0 804bd000-804d5000 rwxp 00000000 00:00 0 804d5000-804ea000 rwxp 00000000 00:00 0 804ea000-80625000 rwxp 00000000 00:00 0 80625000-8064c000 rwxp 00000000 00:00 0 8064c000-8064f000 rwxp 00000000 00:00 0 8064f000-81650000 rwxp 00000000 00:00 0 81650000-84650000 rwxp 00000000 00:00 0 84650000-87050000 rwxp 00000000 00:00 0 87050000-ae650000 rwxp 00000000 00:00 0 ae650000-b3440000 rwxp 00000000 00:00 0 b3440000-b3a50000 rwxp 00000000 00:00 0 b3a50000-b3a52000 r-xs 00000000 08:05 241602 /var/cache/fontconfig/2c5ba8142dffc8bf0377700342b8ca1a-x86.cache-2 b3a52000-b3a5b000 r-xp 00000000 08:05 5018 /usr/lib/libXi.so.6.0.0 b3a5b000-b3a5c000 r-xp 00008000 08:05 5018 /usr/lib/libXi.so.6.0.0 b3a5c000-b3a5d000 rwxp 00009000 08:05 5018 /usr/lib/libXi.so.6.0.0 b3a5d000-b3a66000 rwxp 00000000 00:00 0 b3a66000-b3b1d000 rwxp 00000000 00:00 0 b3b1d000-b3d5d000 rwxp 00000000 00:00 0 b3d5d000-b6b1d000 rwxp 00000000 00:00 0 b6b1d000-b6b2c000 r-xp 00000000 08:05 34735 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libzip.so b6b2c000-b6b2e000 rwxp 0000e000 08:05 34735 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libzip.so b6b2e000-b6b38000 r-xp 00000000 08:05 1042 /lib/tls/i686/cmov/libnss_files-2.10.1.so b6b38000-b6b39000 r-xp 00009000 08:05 1042 /lib/tls/i686/cmov/libnss_files-2.10.1.so b6b39000-b6b3a000 rwxp 0000a000 08:05 1042 /lib/tls/i686/cmov/libnss_files-2.10.1.so b6b3a000-b6b43000 r-xp 00000000 08:05 1055 /lib/tls/i686/cmov/libnss_nis-2.10.1.so b6b43000-b6b44000 r-xp 00008000 08:05 1055 /lib/tls/i686/cmov/libnss_nis-2.10.1.so b6b44000-b6b45000 rwxp 00009000 08:05 1055 /lib/tls/i686/cmov/libnss_nis-2.10.1.so b6b45000-b6b4b000 r-xp 00000000 08:05 1028 /lib/tls/i686/cmov/libnss_compat-2.10.1.so b6b4b000-b6b4c000 r-xp 00005000 08:05 1028 /lib/tls/i686/cmov/libnss_compat-2.10.1.so b6b4c000-b6b4d000 rwxp 00006000 08:05 1028 /lib/tls/i686/cmov/libnss_compat-2.10.1.so b6b4d000-b6b54000 r-xs 00035000 08:05 304369 /home/thomas/workspace/sir13/javaclient/jars/javaclient.jar b6b54000-b6b5c000 rwxs 00000000 08:05 393570 /tmp/hsperfdata_thomas/5065 b6b5c000-b6b6f000 r-xp 00000000 08:05 1020 /lib/tls/i686/cmov/libnsl-2.10.1.so b6b6f000-b6b70000 r-xp 00012000 08:05 1020 /lib/tls/i686/cmov/libnsl-2.10.1.so b6b70000-b6b71000 rwxp 00013000 08:05 1020 /lib/tls/i686/cmov/libnsl-2.10.1.so b6b71000-b6b73000 rwxp 00000000 00:00 0 b6b73000-b6b77000 r-xp 00000000 08:05 5038 /usr/lib/libXtst.so.6.1.0 b6b77000-b6b78000 r-xp 00004000 08:05 5038 /usr/lib/libXtst.so.6.1.0 b6b78000-b6b79000 rwxp 00005000 08:05 5038 /usr/lib/libXtst.so.6.1.0 b6b79000-b6b7f000 r-xp 00000000 08:05 34723 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/native_threads/libhpi.so b6b7f000-b6b80000 rwxp 00006000 08:05 34723 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/native_threads/libhpi.so b6b80000-b6b81000 rwxp 00000000 00:00 0 b6b81000-b6b82000 r-xp 00000000 00:00 0 b6b82000-b6ba5000 r-xp 00000000 08:05 34733 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libjava.so b6ba5000-b6ba7000 rwxp 00023000 08:05 34733 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libjava.so b6ba7000-b6bae000 r-xp 00000000 08:05 1733 /lib/tls/i686/cmov/librt-2.10.1.so b6bae000-b6baf000 r-xp 00006000 08:05 1733 /lib/tls/i686/cmov/librt-2.10.1.so b6baf000-b6bb0000 rwxp 00007000 08:05 1733 /lib/tls/i686/cmov/librt-2.10.1.so b6bb0000-b6bb3000 ---p 00000000 00:00 0 b6bb3000-b6c01000 rwxp 00000000 00:00 0 b6c01000-b6c25000 r-xp 00000000 08:05 1016 /lib/tls/i686/cmov/libm-2.10.1.so b6c25000-b6c26000 r-xp 00023000 08:05 1016 /lib/tls/i686/cmov/libm-2.10.1.so b6c26000-b6c27000 rwxp 00024000 08:05 1016 /lib/tls/i686/cmov/libm-2.10.1.so b6c27000-b72f4000 r-xp 00000000 08:05 34724 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/server/libjvm.so b72f4000-b7341000 rwxp 006cc000 08:05 34724 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/server/libjvm.so b7341000-b7765000 rwxp 00000000 00:00 0 b7765000-b78a3000 r-xp 00000000 08:05 967 /lib/tls/i686/cmov/libc-2.10.1.so b78a3000-b78a4000 ---p 0013e000 08:05 967 /lib/tls/i686/cmov/libc-2.10.1.so b78a4000-b78a6000 r-xp 0013e000 08:05 967 /lib/tls/i686/cmov/libc-2.10.1.so b78a6000-b78a7000 rwxp 00140000 08:05 967 /lib/tls/i686/cmov/libc-2.10.1.so b78a7000-b78aa000 rwxp 00000000 00:00 0 b78aa000-b78ac000 r-xp 00000000 08:05 1014 /lib/tls/i686/cmov/libdl-2.10.1.so b78ac000-b78ad000 r-xp 00001000 08:05 1014 /lib/tls/i686/cmov/libdl-2.10.1.so b78ad000-b78ae000 rwxp 00002000 08:05 1014 /lib/tls/i686/cmov/libdl-2.10.1.so b78ae000-b78b5000 r-xp 00000000 08:05 34734 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/jli/libjli.so b78b5000-b78b7000 rwxp 00006000 08:05 34734 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/jli/libjli.so b78b7000-b78b8000 rwxp 00000000 00:00 0 b78b8000-b78cd000 r-xp 00000000 08:05 1081 /lib/tls/i686/cmov/libpthread-2.10.1.so b78cd000-b78ce000 r-xp 00014000 08:05 1081 /lib/tls/i686/cmov/libpthread-2.10.1.so b78ce000-b78cf000 rwxp 00015000 08:05 1081 /lib/tls/i686/cmov/libpthread-2.10.1.so b78cf000-b78d1000 rwxp 00000000 00:00 0 b78d1000-b78d2000 r-xs 00000000 08:05 161622 /var/cache/fontconfig/4794a0821666d79190d59a36cb4f44b5-x86.cache-2 b78d2000-b78d4000 r-xs 00000000 08:05 241610 /var/cache/fontconfig/7ef2298fde41cc6eeb7af42e48b7d293-x86.cache-2 b78d4000-b78df000 r-xp 00000000 08:05 34732 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libverify.so b78df000-b78e0000 rwxp 0000b000 08:05 34732 /usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/libverify.so b78e0000-b78e2000 rwxp 00000000 00:00 0 b78e2000-b78e3000 r-xp 00000000 00:00 0 [vdso] b78e3000-b78fe000 r-xp 00000000 08:05 64 /lib/ld-2.10.1.so b78fe000-b78ff000 r-xp 0001a000 08:05 64 /lib/ld-2.10.1.so b78ff000-b7900000 rwxp 0001b000 08:05 64 /lib/ld-2.10.1.so bfc33000-bfc48000 rwxp 00000000 00:00 0 [stack] VM Arguments: jvm_args: -Dfile.encoding=UTF-8 java_command: Main Launcher Type: SUN_STANDARD Environment Variables: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games USERNAME=thomas LD_LIBRARY_PATH=/usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/server:/usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386:/usr/lib/jvm/java-6-sun-1.6.0.15/jre/../lib/i386:/usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386/client:/usr/lib/jvm/java-6-sun-1.6.0.15/jre/lib/i386:/usr/lib/xulrunner-addons:/usr/lib/xulrunner-addons SHELL=/bin/bash DISPLAY=:0.0 Signal Handlers: SIGSEGV: [libjvm.so+0x650690], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGBUS: [libjvm.so+0x650690], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGFPE: [libjvm.so+0x52f580], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGPIPE: [libjvm.so+0x52f580], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGXFSZ: [libjvm.so+0x52f580], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGILL: [libjvm.so+0x52f580], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000 SIGUSR2: [libjvm.so+0x532170], sa_mask[0]=0x00000004, sa_flags=0x10000004 SIGHUP: [libjvm.so+0x531ea0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGINT: [libjvm.so+0x531ea0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGTERM: [libjvm.so+0x531ea0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGQUIT: [libjvm.so+0x531ea0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 --------------- S Y S T E M --------------- OS:squeeze/sid uname:Linux 2.6.31-20-generic #57-Ubuntu SMP Mon Feb 8 09:05:19 UTC 2010 i686 libc:glibc 2.10.1 NPTL 2.10.1 rlimit: STACK 8192k, CORE 0k, NPROC infinity, NOFILE 1024, AS infinity load average:1.07 0.55 0.23 CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model 15 stepping 13, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3 Memory: 4k page, physical 3095836k(1519972k free), swap 1261060k(1261060k free) vm_info: Java HotSpot(TM) Server VM (14.1-b02) for linux-x86 JRE (1.6.0_15-b03), built on Jul 2 2009 15:49:13 by "java_re" with gcc 3.2.1-7a (J2SE release) time: Mon Mar 22 12:08:40 2010 elapsed time: 21 seconds

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  • Simple Remote Shared Object with Red5 Flash Server

    - by John Russell
    Hello, I am trying to create a simple chat client using the red5 media server, but I seem to be having a slight hiccup. I am creating a shared object on the server side, and it seems to be creating it successfully. However, when I make changes to the object via the client (type a message), the SYNC event fires, but the content within the shared object remains empty. I suspect I am doing something wrong on the java end, any advice? Console Results: Success! Server Message: clear Server Message: [object Object] Local message: asdf Server Message: change Server Message: [object Object] Local message: fdsa Server Message: change Server Message: [object Object] Local message: fewa Server Message: change Server Message: [object Object] Server Side: package org.red5.core; import java.util.List; import org.red5.server.adapter.ApplicationAdapter; import org.red5.server.api.IConnection; import org.red5.server.api.IScope; import org.red5.server.api.service.ServiceUtils; import org.red5.server.api.so.ISharedObject; // import org.apache.commons.logging.Log; // import org.apache.commons.logging.LogFactory; public class Application extends ApplicationAdapter { private IScope appScope; // private static final Log log = LogFactory.getLog( Application.class ); /** {@inheritDoc} */ @Override public boolean connect(IConnection conn, IScope scope, Object[] params) { appScope = scope; createSharedObject(appScope, "generalChat", false); // Creates general chat shared object return true; } /** {@inheritDoc} */ @Override public void disconnect(IConnection conn, IScope scope) { super.disconnect(conn, scope); } public void updateChat(Object[] params) { ISharedObject so = getSharedObject(appScope, "generalChat"); // Declares and stores general chat data in general chat shared object so.setAttribute("point", params[0].toString()); } } Client Side: package { import flash.display.MovieClip; import flash.events.*; import flash.net.*; // This class is going to handle all data to and from from media server public class SOConnect extends MovieClip { // Variables var nc:NetConnection = null; var so:SharedObject; public function SOConnect():void { } public function connect():void { // Create a NetConnection and connect to red5 nc = new NetConnection(); nc.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler); nc.connect("rtmp://localhost/testChat"); // Create a StoredObject for general chat so = SharedObject.getRemote("generalChat", nc.uri, false); so.connect(nc); so.addEventListener(SyncEvent.SYNC, receiveChat) } public function sendChat(msg:String) { trace ("Local message: " + msg); nc.call("updateChat", null, msg) } public function receiveChat(e:SyncEvent):void { for (var i in e.changeList) { trace ("Server Message: " + e.changeList[i].code) trace ("Server Message: " + e.changeList[i]) } } // Given result, determine successful connection private function netStatusHandler(e:NetStatusEvent):void { if (e.info.code == "NetConnection.Connect.Success") { trace("Success!"); } else { trace("Failure!\n"); trace(e.info.code); } } } }

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  • Flash -> ByteArray -> AMFPHP -> Invalid Image !??

    - by undefined
    Hi, Im loading images into Flash and using JPGEncoder to encode the image to a ByteArray and send this to AMF PHP which writes out the bytearray to a file. This all appears to work correctly and I can download the resulting file in Photoshop CS4 absolutely fine. When i try to open it from the desktop or open it back in Flash it doesnt work... Picasa my default image browser says "Invalid" Here is the code i use to write the bytearray to a file - $jpg = $GLOBALS["HTTP_RAW_POST_DATA"]; file_put_contents($filename, $jpg); That's it ... I use the NetConnection class to connect and call the service, do I need to say Im sending jpg data? I assumed that JPGEncoder took care of that. How can I validate the bytearray before writing the file? Do I need to set MIME type or something .. excuse the slightly noob questions, a little knowledge can be a dangerous thing. Thanks --------------------------------------- PART II ------------------------------------------ Here is some code - 1) load the image into Flash player item.load(); function _onImageDataLoaded(evt:Event):void { var tmpFileRef:FileReference=FileReference(evt.target); image_loader=new Loader ; image_loader.contentLoaderInfo.addEventListener(Event.COMPLETE, _onImageLoaded); image_loader.loadBytes(tmpFileRef.data); } function _onImageLoaded(evt:Event):void { bitmap=Bitmap(evt.target.content); bitmap.smoothing=true; if (bitmap.width>MAX_WIDTH||bitmap.height>MAX_HEIGHT) { resizeBitmap(bitmap); } uploadResizedImage(bitmap); } function resizeBitmap(target:Bitmap):void { if (target.height>target.width) { target.width=MAX_WIDTH; target.scaleY=target.scaleX; } else if (target.width >= target.height) { target.height=MAX_HEIGHT; target.scaleX=target.scaleY; } } function uploadResizedImage(target:Bitmap):void { var _bmd:BitmapData=new BitmapData(target.width,target.height); _bmd.draw(target, new Matrix(target.scaleX, 0, 0, target.scaleY)); var encoded_jpg:JPGEncoder=new JPGEncoder(90); var jpg_binary:ByteArray=encoded_jpg.encode(_bmd); _uploadService=new NetConnection(); _uploadService.objectEncoding=ObjectEncoding.AMF3 _uploadService.connect("http://.../amfphp/gateway.php"); _uploadService.call("UploadService.receiveByteArray",new Responder(success, error), jpg_binary, currentImageFilename); } Many thanks for you help

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  • Integrate flex 3.5 projects in flash builder 4 beta 2

    - by Cyrill Zadra
    Hi I'm currently using Flex Builder 3 and Flex SDK 3.5 for my projects. But I'd like to try out the new Flash Builder 4. So I downloaded and installed the new software, configured all the additional software like subversion, server adapter .. and finally a importet my 2 projects. 1) Main Project (includes a swc generated by the Library Project) (flex sdk 3.5) 2) Library Project (flex sdk 3.4) After the import and project cleanup the project is running perfectly. But as soon as I replace the existing LibraryProject.swc through a new one (compiled with flash builder 4 beta 2 sdk 3.4) VerifyError: Error #1014: class mx.containers::Canvas not found. VerifyError: Error #1014: class mx.containers::HBox not found. VerifyError: Error #1014: class IWatcherSetupUtil not found. ... and several others not found errors. Does anyone has the same error. How can I get my project running again? thanks & regards cyrill

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  • Zend Framework: Flash Messenger, add a message from the model

    - by Dan
    Any idea on how best to add a message to flash messenger from the model? As FlashMessenger is an action helper, this seems not to be possible, so the obvious solution is to create an internal message object in the model, and return that to the controller from where you can use addMessage(). But if you want to return something else as well, this falls down. Another idea is an additional session namespace for these internal messages, which is then merged in with the Flash Messenger namespace messages at output time? Anyone have any thoughts or experience on this? Cheers.

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  • adding a flash object to FancyBox using jquery swfobject

    - by Freeman
    Fellows, I dont seem to be getting a solution. I have a a video gallery which I create by dynamically from a database. I have managed to create a flash object which plays well without FancyBox, however I want a person to click on the gallery and then an swobject is created which will then be show on a fancybox. Here is part of my javascript which is not working. $.ajax({ data:"search=vids&id="+ art, type: "POST", url: "doyit.php", success: function(msg){ $(".videogallery").html('<h3>Click to view videos of '+name+'</h3>'+msg); $('.video').bind('click',function(ev){ var vid=$(this).attr("href"); var img=$(this).find("img").attr("src") $(this).flash({swf: "mediaplayer.swf", flashvars: { file: vid, image: img } }) $(this).fancybox( { ajax:{ type:"POST"}, 'padding' : 0, 'autoScale' : false, 'transitionIn' : 'none', 'transitionOut' : 'none', 'title' : this.title, 'width' : 680, 'height' : 495 } ); $(this).unbind(ev) return false; }) } Any suggestions?

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  • How to prevent autoplay and run my own app when inserting an USB-Flash drive

    - by Thomas
    when inserting an USB-Flash drive, Windows normally opens the Autoplay dialog that offers to browse the drive or if there are multimedia files it offers to choose an app to open them. We developed a media player that is connected to the USB-Drive and registers itself as Mass Storage Device. What I need is, that when inserting the Player that this Dialog is not shown, but instead my own application is launched. Ideally the application would be on the Flash Drive itself, but as I understood is that Autorun is disabled for USB-Drives. It would be enough if a preinstalled application is launched. I already tried to catch the WM_DRIVE_CHANGE message, but this only works if my application is the top most window, otherwise the Autoplay Dialog is displayed. Best Tom

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  • Can Flash player play .m3u audio files from a remote location

    - by undefined
    Is it possible to play a .m3u file streamed from a remote location through Flash Player in a browser? I have a player that loads and plays .mp3 files but also want to be able to play .m3u files. I have looked at the as3plsreader on google code but I think this is only for AIR and desktop files. anyone tried this or know where I should start looking for an answer? If I wasnt to use flash, what other ways could I get remote m3u files to play in a browser?

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  • clock and date showing on a live site but not on localhost

    - by grumpypanda
    I've got clock.swf and date.swf working fine on a live site, now I am using the same code to set up a local develop environment. Everything is working well except the clock.swf and date.swf stopped working on localhost. Two same yellow errors "You need to update your Flash plugin. Click here if you want to continue." but of course my Flash player is up to date since the live site is working fine. I'll post the code below which I think has caused the error. I've been searching online for the last couple of hours but no luck, anyone has got into an issue like this before? What can be the possible cause? Any help is appreciated. This is on the index.php, I can post more code here if needed. <?php embed_flash("swf/clock.swf", CLOCK_WIDTH, CLOCK_HEIGHT, "8", '', "flashcontent");?> <?php embed_flash("swf/date.swf", DATE_WIDTH, DATE_HEIGHT, "8", '', "flashcontent_date");?> configure.php define('CLOCK_WIDTH', '450'); define('CLOCK_HEIGHT', ''); define('DATE_WIDTH', '440'); define('DATE_HEIGHT', ''); flash_function.php <?php function embed_flash($name, $w, $h, $version, $bgcolor, $id) { $cacheBuster = rand(); $padTop = $h/3; ?> <style> a.noflash:link, a.noflash:visited, a.noflash:active {color: #1860C2; text-decoration: none; background:#FFFFFF;} a.noflash:hover {color:#000; text-decoration:none; background:#EEEEEE;} .message { width: <?=$w;?>px; font-size:12px; font-weight:normal; margin-bottom: 10px; padding: 5px; color: #EEE; background: orange;"} </style> <div id="<?=$id; ?>" align="center"> <noscript> <div class="message"> Please enable <a href="https://www.google.com/support/adsense/bin/answer.py?answer=12654" target="_blank" class="noflash">&nbsp;JavaScript&nbsp;</a> to view this page properly. </div> </noscript> <div class="message"> You need to update your Flash plugin. Click <a href="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash&promoid=BIOW" target="_blank" class="noflash">&nbsp;here&nbsp;</a> if you want to continue. </div> </div> <script type="text/javascript"> // <![CDATA[ var so = new SWFObject("<?=$name;?>", "", "<?=$w;?>", "<?=$h;?>", "<?=$version;?>", "<?=$bgcolor;?>"); so.addParam("quality", "high"); so.addParam("allowScriptAccess", "sameDomain"); so.addParam("scale", "showall"); so.addParam("loop", "false"); so.addParam("wmode", "transparent"); so.write("<?=$id;?>"); // ]]> </script>

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  • What is "Task" in the output of "apt-cache show package_name"?

    - by vasa1
    When I run apt-cache show inkscape, the bottom of the output has: Description-md5: fed6589659211fb40b80d03dda6e5675 Homepage: http://www.inkscape.org/ Description-md5: fed6589659211fb40b80d03dda6e5675 Bugs: https://bugs.launchpad.net/ubuntu/+filebug Origin: Ubuntu Supported: 9m Task: ubuntu-usb, edubuntu-desktop-gnome, edubuntu-usb, ubuntustudio-video, ubuntustudio-graphics But when I run apt-cache show pdfgrep, the line beginning with Task is absent: Description-md5: 8c8a5397f782d81d957740280eb8f352 Homepage: http://pdfgrep.sourceforge.net/ Description-md5: 8c8a5397f782d81d957740280eb8f352 Bugs: https://bugs.launchpad.net/ubuntu/+filebug Origin: Ubuntu Why is the line beginning with Task present for some packages and not for others?

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  • Rails Counter Cache and its implementation

    - by Ishu
    Hello All, I am trying to get hold of rails counter cache feature but not able to grasp it completely. Let's say that We have 3 models A B C A belongs to B or C depending upon a field key_type and key_id. key_type tells whether A belongs to B or C so if key_type="B" then the record belongs to B otherwise it belongs to C. In my model a.rb, I have defined following associations: belongs_to :b, :counter_cache => true, :foreign_key => "key_id" belongs_to :c, :counter_cache => true, :foreign_key => "key_id" and in b and c model files has_many :as , :conditions => {:key_type => "B"} has_many :as , :conditions => {:key_type => "C"} Both B and C Models have a column as as_count The problem is every time an object of a is created count is increased in the both the models b and c. Any help is appreciated. Initially i thought that this may work: belongs_to :b, :counter_cache => true, :foreign_key => "key_id", :conditions => {:key_type => "B"} belongs_to :c, :counter_cache => true, :foreign_key => "key_id", :conditions => {:key_type => "C"} But this does not help. Thanks

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  • .NET assembly cache / ngen / jit image warm-up and cool-down behavior

    - by Mike Jiang
    Hi, I have an Input Method (IME) program built with C#.NET 2.0 DLL through C++/CLI. Since an IME is always attaching to another application, the C#.NET DLL seems not able to avoid image address rebasing. Although I have applied ngen to create a native image of that C#.NET 2.0 DLL and installed it into Global Assembly Cache, it didn't improved much, approximately 12 sec. down to 9 sec. on a slow PIII level PC. Therefore I uses a small application, which loads all the components referenced by the C#.NET DLL at the boot up time, to "warm up" the native image of that DLL. It works fine to speed up the loading time to 0.5 sec. However, it only worked for a while. About 30 min. later, it seems to "cool down" again. Is there any way to control the behavior of GAC or native image to be always "hot"? Is this exactly a image address rebasing problem? Thank you for your precious time. Sincerely, Mike

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  • SQL Cache Dependency not working with Stored Procedure

    - by pjacko
    Hello, I can't get SqlCacheDependency to work with a simple stored proc (SQL Server 2008): create proc dbo.spGetPeteTest as set ANSI_NULLS ON set ANSI_PADDING ON set ANSI_WARNINGS ON set CONCAT_NULL_YIELDS_NULL ON set QUOTED_IDENTIFIER ON set NUMERIC_ROUNDABORT OFF set ARITHABORT ON select Id, Artist, Album from dbo.PeteTest And here's my ASP.NET code (3.5 framework): -- global.asax protected void Application_Start(object sender, EventArgs e) { string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["MyConn"].ConnectionString; System.Data.SqlClient.SqlDependency.Start(connectionString); } -- Code-Behind private DataTable GetAlbums() { string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["UnigoConnection"].ConnectionString; DataTable dtAlbums = new DataTable(); using (SqlConnection connection = new SqlConnection(connectionString)) { // Works using select statement, but NOT SP with same text //SqlCommand command = new SqlCommand( // "select Id, Artist, Album from dbo.PeteTest", connection); SqlCommand command = new SqlCommand(); command.Connection = connection; command.CommandType = CommandType.StoredProcedure; command.CommandText = "dbo.spGetPeteTest"; System.Web.Caching.SqlCacheDependency new_dependency = new System.Web.Caching.SqlCacheDependency(command); SqlDataAdapter DA1 = new SqlDataAdapter(); DA1.SelectCommand = command; DataSet DS1 = new DataSet(); DA1.Fill(DS1); dtAlbums = DS1.Tables[0]; Cache.Insert("Albums", dtAlbums, new_dependency); } return dtAlbums; } Anyone have any luck with getting this to work with SPs? Thanks!

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  • Jsp page getting called from cache rather than getting loaded from server

    - by sam4u-optimistic86
    I am calling a jsp based on 2 parameters which is passed from jsp 1 in this way.Below i pass 2 parameters into 2.jsp and based on these 2 parameters data is displayed in 2.jsp.I have a loop in which i have a number of hrefs like the one i have described below.Each of these href passes a different set of value to 2.jsp. out.println("<a href=\"2.jsp?prId=" + prog.getId() + count + "\">" + prog.getName() + "</a>"); I retrieve these 2 parameters in 2.jsp using the following lines count_id = request.getParameter( "country_id" ); prog_id = Integer.parseInt(request.getParameter( "program_id" )); Based on these 2 parameters i show the corresponding data in 2.jsp Now i have a back button in 2.jsp and i call 1.jsp in 2.jsp using the following code <a href="1.jsp"><img src="/image/back.gif" border="0"></a> The problem is when i use the back button and go back to 1.jsp and select another href like the one i have described above i get the data related to the previous href selected. I guess the problem is when i request the page is loaded from cache rather than from the server. Please advice

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  • Cache consistency & spawning a thread

    - by Dave Keck
    Background I've been reading through various books and articles to learn about processor caches, cache consistency, and memory barriers in the context of concurrent execution. So far though, I have been unable to determine whether a common coding practice of mine is safe in the strictest sense. Assumptions The following pseudo-code is executed on a two-processor machine: int sharedVar = 0; myThread() { print(sharedVar); } main() { sharedVar = 1; spawnThread(myThread); sleep(-1); } main() executes on processor 1 (P1), while myThread() executes on P2. Initially, sharedVar exists in the caches of both P1 and P2 with the initial value of 0 (due to some "warm-up code" that isn't shown above.) Question Strictly speaking – preferably without assuming any particular CPU – is myThread() guaranteed to print 1? With my newfound knowledge of processor caches, it seems entirely possible that at the time of the print() statement, P2 may not have received the invalidation request for sharedVar caused by P1's assignment in main(). Therefore, it seems possible that myThread() could print 0. References These are the related articles and books I've been reading. (It wouldn't allow me to format these as links because I'm a new user - sorry.) Shared Memory Consistency Models: A Tutorial hpl.hp.com/techreports/Compaq-DEC/WRL-95-7.pdf Memory Barriers: a Hardware View for Software Hackers rdrop.com/users/paulmck/scalability/paper/whymb.2009.04.05a.pdf Linux Kernel Memory Barriers kernel.org/doc/Documentation/memory-barriers.txt Computer Architecture: A Quantitative Approach amazon.com/Computer-Architecture-Quantitative-Approach-4th/dp/0123704901/ref=dp_ob_title_bk

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  • Load SQL query result data into cache in advance

    - by Marc
    I have the following situation: .net 3.5 WinForm client app accessing SQL Server 2008 Some queries returning relatively big amount of data are used quite often by a form Users are using local SQL Express and restarting their machines at least daily Other users are working remotely over slow network connections The problem is that after a restart, the first time users open this form the queries are extremely slow and take more or less 15s on a fast machine to execute. Afterwards the same queries take only 3s. Of course this comes from the fact that no data is cached and must be loaded from disk first. My question: Would it be possible to force the loading of the required data in advance into SQL Server cache? Note My first idea was to execute the queries in a background worker when the application starts, so that when the user starts the form the queries will already be cached and execute fast directly. I however don't want to load the result of the queries over to the client as some users are working remotely or have otherwise slow networks. So I thought just executing the queries from a stored procedure and putting the results into temporary tables so that nothing would be returned. Turned out that some of the result sets are using dynamic columns so I couldn't create the corresponding temp tables and thus this isn't a solution. Do you happen to have any other idea?

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  • Rate Limit Calls To Api Using Cache

    - by namtax
    Hi I am using coldfusion to call the last.fm api, using a cfc bundle sourced from here I am concerned about going over the request limit, which is 5 requests per originating IP address per second, averaged over a 5 minute period. The cfc bundle has a central component which calls all the other components, which are split up into sections like "artist", "track" etc...This central component "lastFmApi.cfc." is initiated in my application, and persisted for the lifespan of the application // Application.cfc example <cffunction name="onApplicationStart"> <cfset var apiKey = '[your api key here]' /> <cfset var apiSecret = '[your api secret here]' /> <cfset application.lastFm = CreateObject('component', 'org.FrankFusion.lastFm.lastFmApi').init(apiKey, apiSecret) /> </cffunction> Now if I want to call the api through a handler/controller, for example my artist handler...I can do this <cffunction name="artistPage" cache="5 mins"> <cfset qAlbums = application.lastFm.user.getArtist(url.artistName) /> </cffunction> I am a bit confused towards caching, but am caching each call to the api in this handler for 5 mins, but does this make any difference, because each time someone hits a new artist page wont this still count as a fresh hit against the api? Wondering how best to tackle this Thanks

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  • Gem Load Error about whois command and removed cache

    - by Puru puru rin..
    Hello, I have an awesome trouble with Gem. After executing this command: rm -f /usr/local/lib/ruby/gems/1.9.1/cache/* I can not do any thing. If I try for instance: gem cleanup I get this kind of answer: /usr/local/lib/ruby/gems/1.9.1/gems/gemwhois-0.1/lib/gemwhois.rb:3:in `require': no such file to load -- rubygems/commands/whois (LoadError) from /usr/local/lib/ruby/gems/1.9.1/gems/gemwhois-0.1/lib/gemwhois.rb:3:in `<top (required)>' from /usr/local/lib/ruby/gems/1.9.1/gems/gemwhois-0.1/lib/rubygems_plugin.rb:2:in `require' from /usr/local/lib/ruby/gems/1.9.1/gems/gemwhois-0.1/lib/rubygems_plugin.rb:2:in `<top (required)>' from /usr/local/lib/ruby/site_ruby/1.9.1/rubygems.rb:1113:in `load' from /usr/local/lib/ruby/site_ruby/1.9.1/rubygems.rb:1113:in `block in <top (required)>' from /usr/local/lib/ruby/site_ruby/1.9.1/rubygems.rb:1105:in `each' from /usr/local/lib/ruby/site_ruby/1.9.1/rubygems.rb:1105:in `<top (required)>' from <internal:gem_prelude>:235:in `require' from <internal:gem_prelude>:235:in `load_full_rubygems_library' from <internal:gem_prelude>:334:in `const_missing' from /usr/local/bin/gem:12:in `<main>' It's the same for gem -v, of just gem command... I'm working of Snow Leopard. What should the best solution about you? Thanks a lot!

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  • Radio buttons being reset in FF on cache-refresh

    - by Andrew Song
    (This is technically an addendum to an earlier StackOverflow question I had posted, but my original post asked a different question which doesn't really cover this topic -- I don't want to edit my older question as I feel this is different enough to merit its own page) While browsing my website in Firefox 3.5 (and only FF3.5), I come across a page with two radio buttons that have the following HTML code: <input id="check1" type="radio" value="True" name="check" checked="checked"/> <input id="check2" type="radio" value="False" name="check"/> This page renders as expected, with 'check1' checked and 'check2' unchecked. When I then go to refresh the page by pressing Control + R, the two radio buttons render, but they are both unchecked even though the raw HTML code is the same (as above). If I do a cache-miss refresh (via Control + F5 or Control + Shift + R), the page returns back to the way you'd expect it. This is not a problem in any other browser I've tried except FF3.5. What is causing these radio buttons to be reset on a normal refresh? How can I avoid this?

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