Search Results

Search found 2649 results on 106 pages for 'signal slot'.

Page 7/106 | < Previous Page | 3 4 5 6 7 8 9 10 11 12 13 14  | Next Page >

• shmat() sending signal 11

  - by Sachin Chourasiya

  Please let me know when a call to shmat function can raise a signal 11. if ((shmId=shmget(shmKey, 0, 0)) <= 0) { printf( "shmget(0x%x)", shmKey); return 0; } printf( "queueOpen - Key 0x%x gives ID %d", shmKey, shmId); qh = shmat(shmId, 0, SHM_RND); I am getting a signal 11 by the code above. Please help

  Read the article

• Qt - arguments in signal-slots

  - by bullettime

  I have a QPushButton, QDateEdit and another custom object. I want to connect the button to the date edit object in a way that when I click the button, the date edit object will change its set date to a date defined on the custom object. Kinda like this: connect(pushbutton,SIGNAL(clicked()),dateedit,SLOT(setDate(custom_object.getDate()))); but I can't do that. Apparently, the connect statement doesn't specify what's the information being passed from the signal to the slot, only the type of the information being passed. Is there a way to do this without having to create a new class?

  Read the article

• Windows 7 - Wireless Signal Good - Internet Often Says Limited or No Activity

  - by Anthony Trilussa Pizzo

  Hi - I have a New Dell Studio XPS latop that I hooked up in early January of 2010. The Dell Studio XPS laptop is connected to my wireless router (Belkin Wireless N). The router was purchased in Februaru of 2010 because I thought my router was bad (A D-Link router). Comcast is my ISP. Everyday, at random times, the internet will have a good signal (according to the little Win 7 icon on the taskbar) but I will receive a message saying limited or no internet access and I cannot access the internet. I have the internet setup to automatically get an IP and I did the IPCONFIG release / renew but with no success. I even had a WiFi enabled Blackberry right next to my computer and whenever the computer loses an WiFi connection, so does the Blackberry. The router isnt't bad, because the old router did the same thing - giving me limited or no internet access while working sometimes. I also tried using two other laptops in same physical position as my Dell Studio XPS laptop and they have the same problem. I am going crazy trying to figure this out as I have called the Router Company (Belkin), my ISP (Comcast), and my computer maker (Dell). Can anyone offer some suggestions and I can try them as we work through this and maybe one of the suggestion will be right one. Thanks in advance for even reading my problem. I searched for a problem similar to mine on the internet, but I have not been able to keep a steady internet connection. (Side note - I used to have an IBM thinkpad laptop and D - Link router and for years that wireless connection worked FLAWLESSLY, with the same physical set up - the laptop in my bedroom, and the router in the basement.)

  Read the article

• Acer LCD says "no signal"

  - by Ken

  I have an Acer 24" LCD (model "AL2423WDR") that's about 3 years old. It worked perfectly for most of its lifetime so far. Recently it started giving problems. When I turn it on, it either says "no signal" on the display, or the power light goes yellow (as if in power-saving mode). This happens with both DVI and VGA (both of which worked fine before), and stranger still, the 4 buttons on the front, for accessing the on-screen menus, don't do anything. I've also tried different computer hardware and software (PC/Mac, Linux/MacOS), but nothing has worked. I've tried power-cycling it (with both the power button and the power switch), and also unplugging it entirely. The nonworking buttons suggest to me an issue with the firmware. I found a place on Acer's website that says I can send it in to have it fixed, at my expense, but I'll avoid that if I can. Is there a way to fully reset it manually? Or is there something else I can try?

  Read the article

• No signal on monitor after plug it to a linux box

  - by yaroot

  I use my old computer as an NAS, so I remove the monitor after I installed linux on it (disconnect vga cable). I use ssh to control the machine and it works fine. Until some day, after kernel/softare upgrade or messing up some configs, I cannot connect to it through ssh, then I have to plug the monitor back, but the monitor says "No input signal". So I have to restart the computer WITH the monitor connected, and the monitor's back! I think the computer/linux kernel doesn't detect the monitor plug-in event. So how can I start my linux box without a monitor, but when it goes wrong I can still plug my monitor (vga) back and use the console. Edit: just one pci-e video card, has dvi, vga, tv/out (s-video) Edit2: Xorg is not running. I just need the console (CTRL+ALT+F1). The problem is, if the machine booted without a monitor connected, it won't give me a pseudo terminal after I attach the vga cable while it's running. Clearly the monitor is not auto detected as usb device. I'm wondering how to let the monitor auto detected.

  Read the article

• No video signal and server shuts down

  - by Ilya

  I have a brand new server. The motherboard is Intel S2600CP4, two 8-core Intel E5-2600 processors. RAM is 8 DIMM slots of 8 GB each (KVR1600D3D4R11SK4/32GI, I installed them into the blue slots), Power supply is 1050W Corsair. Most of the time the server won't start up - the fans are spinning, but I don't have video signal. And it keeps restarting on its own every 3 mins. But maybe after 30 mins it will eventually load and show something on the screen. I even was able to install ESXi 5.0 (vSphere) on it. It recognizes both CPUs and all of the 64GB of RAM. But even then it worked only for around 5 hours and then restarted on its own. What's the problem? That's a very expensive peace of hardware and I can't afford purchasing a new motherboard/CPU. By the way, on the front panel the "System Status" LED is constantly amber (not blinking), even when the server started successfully. And also in the BIOS I can see lots of "processor 01 unable to apply microcode update 8160" fatal errors. Please help me with issue, I will really appreciate this!

  Read the article

• how to debug when xinetd says : got signal 17 (child exited)

  - by Faizan Shaik

  I am trying to start services vsftpd and sshd using xinetd. my config files are as follows. /etc/xinetd.conf defaults { instances = 60 log_type = FILE /var/log/xinetdlog log_on_success = HOST PID log_on_failure = HOST cps = 25 30 only_from = localhost } includedir /etc/xinetd.d /etc/xinetd.d/ftp service ftp { disable = no server = /usr/sbin/vsftpd server_args = -l user = root socket_type = stream protocol = tcp wait = no instances = 4 flags = REUSE nice = 10 log_on_success += DURATION HOST USERID only_from = 127.0.0.1 10.0.0.0/24 } /etc/xinetd.d/ssh service ssh { disable = no log_on_failure += USERID server = /usr/sbin/sshd user = root socket_type = stream protocol = tcp wait = no instances = 20 flags = REUSE only_from = 127.0.0.1 10.0.0.0/24 } Even though i've included only_from attribute, vsftp server as well as ssh server are refusing connection from localhost. while vsftp and ssh servers are working fine individually when i check with "service vsftpd start" and "service ssh start". when i did debug using "xinetd -d" throug terminal i got the output as 13/10/20@00:06:08: DEBUG: 3592 {cnf_start_services} Started service: ftp 13/10/20@00:06:08: DEBUG: 3592 {cnf_start_services} Started service: ssh 13/10/20@00:06:08: DEBUG: 3592 {cnf_start_services} mask_max = 8, services_started = 2 13/10/20@00:06:08: NOTICE: 3592 {main} xinetd Version 2.3.14 started with libwrap loadavg options compiled in. 13/10/20@00:06:08: NOTICE: 3592 {main} Started working: 2 available services 13/10/20@00:06:08: DEBUG: 3592 {main_loop} active_services = 2 13/10/20@00:06:16: DEBUG: 3592 {main_loop} select returned 1 13/10/20@00:06:16: DEBUG: 3592 {server_start} Starting service ftp 13/10/20@00:06:16: DEBUG: 3592 {main_loop} active_services = 2 13/10/20@00:06:16: DEBUG: 3607 {exec_server} duping 9 13/10/20@00:06:16: DEBUG: 3592 {main_loop} active_services = 2 13/10/20@00:06:16: DEBUG: 3592 {main_loop} select returned 1 13/10/20@00:06:16: DEBUG: 3592 {check_pipe} Got signal 17 (Child exited) 13/10/20@00:06:16: DEBUG: 3592 {child_exit} waitpid returned = 3607 13/10/20@00:06:16: DEBUG: 3592 {server_end} ftp server 3607 exited 13/10/20@00:06:16: DEBUG: 3592 {svc_postmortem} Checking log size of ftp service 13/10/20@00:06:16: INFO: 3592 {conn_free} freeing connection 13/10/20@00:06:16: DEBUG: 3592 {child_exit} waitpid returned = -1 both services are getting started but neither of them is working. after banging for 3-4 hours i still don't have any clue about this error. Any help would be appreciated. thanks!

  Read the article

• Obtaining clear cable signal with Hauppage 1191-950Q TV Tuner

  - by Kyle B.

  I bought a Hauppauge 1191 WinTV-HVR-950Q TV Tuner a while back, and I am attempting to use it to watch TV in Windows Media Center. I do not have cable TV, however I used to have Comcast. Through experimentation, I found that connecting my coax cable into my TV, I was able to view television (i.e. 2-1 = CBS, 5-1 = NBC, etc). This also works on a second TV I use in another room. When I connect the coax cable to my TV Tuner stick and scan TV channels in Windows Media Center, it only picks up 1 station (like 81 or something). My only conclusion on this is somehow the hardware in the television is decrypting a signal that the TV tuner stick is not able to. Is that possible? Should I try a different TV tuner? Any assistance would be appreciated. I also bought a Terk HD Indoor Antenna but my reception has been flakey, so I would rather go this route if possible.

  Read the article

• Fedora 12 How to Force a Display to Load on Boot even when no Monitor is Attached

  - by key

  When booting Fedora 12 with no monitor connected, if I connect a monitor later it gives a no signal error. I think it is set to auto-detect if a monitor is connected or not and load a display based of that. Since it initially detects no monitor no display is loaded. What I would like to do is have it act as if a monitor was always connected and provide the display signal always. I don't know if this is the issue or not but if you know how I might be able to fix this issue so that I can connect a monitor whenever I feel like it without having to restart that would be best. Thanks for the help! :D

  Read the article

• Background process and SIGHUP

  - by Charles Salvia

  My understanding is that a program that is associated with a terminal will receive the SIGHUP signal if that terminal is closed. This usually will terminate the program. I also know that you can use the nohup command along with the & symbol to run the program in the background, and disassociate it from the terminal so that the program is not terminated when the terminal closes (on log out.) However, suppose a program is run normally without nohup, but is then suspended using Cntl-Z. If the program is then resumed in the background using the bg command, will it receive the SIGHUP signal on log out? Or to put it another way: if I have a program which is already running, and I don't want to stop it but I'd like to log out, can I suspend it using Cntl-Z and run it in the background using bg? Or will the program be terminated when I log out?

  Read the article

• Remove a ReactiveCocoa signal from a control

  - by dbarros

  If I assign a signal to a property of a control: RAC(self.loginButton.enabled) = [RACSignal combineLatest:@[ self.usernameTextField.rac_textSignal, self.passwordTextField.rac_textSignal ] reduce:^(NSString* username, NSString* password) { return @(username.length > 0 && password.length > 0); }]; But then wanted to assign a different RACSignal to enabled, how can I clear any existing one before doing so? If I try and set it a second time, I get an exception like the following: 2013-10-29 16:54:50.623 myApp[3688:c07] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Signal <RACSignal: 0x975e9e0> name: +combineLatest: ( "<RACSignal: 0x975d600> name: <UITextField: 0x10f2c420> -rac_textSignal", "<RACSignal: 0x975de30> name: <UITextField: 0x10f306e0> -rac_textSignal" ) reduce: is already bound to key path "self.loginButton.enabled" on object <LoginViewController: 0x10f264e0>, adding signal <RACSignal: 0x9763500> name: +combineLatest: ( "<RACSignal: 0x97624f0> name: <UITextField: 0x10f2c420> -rac_textSignal", "<RACSignal: 0x97629e0> name: <UITextField: 0x10f306e0> -rac_textSignal" ) reduce: is undefined behavior'

  Read the article

• Throwing a C++ exception from inside a Linux Signal handler

  - by SoapBox

  As a thought experiment more than anything I am trying to get a C++ exception thrown "from" a linux signal handler for SIGSEGV. (I'm aware this is not a solution to any real world SIGSEGV and should never actually be done, but I thought I would try it out after being asked about it, and now I can't get it out of my head until I figure out how to do it.) Below is the closest I have come, but instead of the signal being caught properly, terminate() is being called as if no try/catch block is available. Anyone know why? Or know a way I can actually get a C++ exception from a signal handler? The code (beware, the self modifying asm limits this to running on x86_64 if you're trying to test it): #include <iostream> #include <stdexcept> #include <signal.h> #include <stdint.h> #include <errno.h> #include <string.h> #include <sys/mman.h> using namespace std; uint64_t oldaddr = 0; void thrower() { cout << "Inside thrower" << endl; throw std::runtime_error("SIGSEGV"); } void segv_handler(int sig, siginfo_t *info, void *pctx) { ucontext_t *context = (ucontext_t *)pctx; cout << "Inside SIGSEGV handler" << endl; oldaddr = context->uc_mcontext.gregs[REG_RIP]; uint32_t pageSize = (uint32_t)sysconf(_SC_PAGESIZE); uint64_t bottomOfOldPage = (oldaddr/pageSize) * pageSize; mprotect((void*)bottomOfOldPage, pageSize*2, PROT_READ|PROT_WRITE|PROT_EXEC); // 48 B8 xx xx xx xx xx xx xx xx = mov rax, xxxx *((uint8_t*)(oldaddr+0)) = 0x48; *((uint8_t*)(oldaddr+1)) = 0xB8; *((int64_t*)(oldaddr+2)) = (int64_t)thrower; // FF E0 = jmp rax *((uint8_t*)(oldaddr+10)) = 0xFF; *((uint8_t*)(oldaddr+11)) = 0xE0; } void func() { try { *(uint32_t*)0x1234 = 123456789; } catch (...) { cout << "caught inside func" << endl; throw; } } int main() { cout << "Top of main" << endl; struct sigaction action, old_action; action.sa_sigaction = segv_handler; sigemptyset(&action.sa_mask); action.sa_flags = SA_SIGINFO | SA_RESTART | SA_NODEFER; if (sigaction(SIGSEGV, &action, &old_action)<0) cerr << "Error setting handler : " << strerror(errno) << endl; try { func(); } catch (std::exception &e) { cout << "Caught : " << e.what() << endl; } cout << "Bottom of main" << endl << endl; } The actual output: Top of main Inside SIGSEGV handler Inside thrower terminate called after throwing an instance of 'std::runtime_error' what(): SIGSEGV Aborted Expected output: Top of main Inside thrower caught inside func Caught : SIGSEGV Bottom of main

  Read the article

• TV not detected by Windows/VGA - when there is a WHDI device in the signal chain

  - by ashwalk

  I'm at my wit's end with this one... I had an EVGA GTS 250, and I used to plug it's HDMI out into a WHDI sender, which transmitted to its corresponding WHDI receiver 15ft away, which then connected to a Samsung LN40D LCD TV through another HDMI cable. PC/VGA < [hdmi cable] < WHDI sender <[air] WHDI receiver < [hdmi cable] < TV It was perfect, stable, no perceivable latency. I just plugged everything the first time and it worked instantly. It sent 5.1 audio, and Windows/nVidia Control Center detected the TV by its name. The WHDI device is this one: http://goo.gl/Q8iWI5 Now I bought an EVGA GTX 650, and WHDI doesn't work anymore. Both Windows and nVidia Control Center won't detect the TV, only the monitor that's connected via DVI. The TV screen shows "TX202913 connected. Check video signal." on top of a black screen. Though the device is not the problem itself, just the fact that it's not allowing direct connection between PC and TV. I would bet that if put an AVR in its place I'd also have this issue. The HDMI on this new card works with other monitors. If I put the older card back, WHDI works normally. I have googled this for 5 months on and off. Once I bumped into a page that showed how to force a display device to always-on through registry edit. Once I restarted windows, the Tv (through WHDI) displayed my expanded or duplicated desktop at 1024x768 ONLY, and listed the display as "digital display". I could not change the resolution and it wouldn't playback audio (although the option was available at nVidia Control Center HDMI audio options, but did not work). This proves that there is no conflict between the devices, except that software-wise, Windows cannot, for the life of it, understand that there's a TV there to send video/audio to. Since this won't do (no audio, poor video), I reverted this regedit. It's also not an EDID problem within the TV, since when connected directly it works. The last weird bit of this saga is that today, I reminded of Windows' "Add Device" dialog, gave it a go, and a "Samsung Generic UPNP TV" showed up, which I promptly installed the drives for, rising to a climax of... ...NOTHING HAPPENING. As far as I can tell, it really didn't change anything other than using up a few kb in my main disc. I should also say that I looked a LOT into handshake problems and nothing applied either. Do any of you have an idea of what may be going on? I can't stand the thought of having a us$200 device not working because of the addition of a newer graphics card, when the much older one had no issues. There is absolutely NO REASON for this to happen. There is NO documentation on WHDI online. Apparently no one buys this stuff. For the same reason, no one responded to this same plea for help on NVidia and EVGA forums. Worst case, this can be a warning about this setup for people in the future. Thanx in advance.

  Read the article

• Mean filter in MATLAB without loops or signal processing toolbox

  - by Doresoom

  I need to implement a mean filter on a data set, but I don't have access to the signal processing toolbox. Is there a way to do this without using a for loop? Here's the code I've got working: x=0:.1:10*pi; noise=0.5*(rand(1,length(x))-0.5); y=sin(x)+noise; %generate noisy signal a=10; %specify moving window size my=zeros(1,length(y)-a); for n=a/2+1:length(y)-a/2 my(n-a/2)=mean(y(n-a/2:n+a/2)); %calculate mean for each window end mx=x(a/2+1:end-a/2); %truncate x array to match plot(x,y) hold on plot(mx,my,'r')

  Read the article

• QTableWidget signal cellChanged(): distinguish between user input and change by routines

  - by crabman

  i am using PyQt but my question is a general Qt one: I have a QTableWidget that is set up by the function updateTable. It writes the data from DATASET to the table when it is called. Unfortunately this causes my QTableWidget to emit the signal cellChanged() for every cell. The signal cellChanged() is connected to a function on_tableWidget_cellChanged that reads the contents of the changed cell and writes it back to DATASET. This is necessary to allow the user to change the data manually. So everytime the table is updated, its contents are written back to DATASET. Is there a way to distinguish if the cell was changed by the user or by updateTable? i thought of disconnecting on_tableWidget_cellChanged by updateTable temporarily but that seems to be a little dirty.

  Read the article

• PyQt error: No such signal QObject::dataChanged

  - by DSblizzard

  PyQt application works fine, but when I close it Python shows this message: "Object::connect: No such signal QObject::dataChanged(QModelIndex,QModelIndex)" What is the cause of this? There isn't dataChanged signal in the program. EDIT: Almost minimal program which causes error: import sys from PyQt4.QtCore import * from PyQt4.QtGui import * from PyQt4.QtSql import * import ui_DBMainWindow global Mw, Table, Tv Id, Name, Size = range(3) class TTable(): pass Table = TTable() class TMainWindow(QMainWindow, ui_DBMainWindow.Ui_MainWindow): def __init__(self, parent = None): global Table QMainWindow.__init__(self, parent) self.setupUi(self) self.showMaximized() self.mapper = QDataWidgetMapper(self) self.mapper.setModel(Table.Model) def main(): global Mw, Table, Tv QApp = QApplication(sys.argv) DB = QSqlDatabase.addDatabase("QSQLITE") DB.setDatabaseName("1.db") Table.Model = QSqlTableModel() Table.Model.setTable("MainTable") Table.Model.select() Mw = TMainWindow() QApp.exec_() if __name__ == "__main__": main()

  Read the article

• QTableWidget signal cellChanged(): distinguish between user input and chage by routines

  - by crabman

  i am using PyQt but my question is a general Qt one: I have a QTableWidget that is set up by the function updateTable. It writes the data from DATASET to the table when it is called. Unfortunately this causes my QTableWidget to emit the signal cellChanged() for every cell. The signal cellChanged() is connected to a function on_tableWidget_cellChanged that reads the contents of the changed cell and writes it back to DATASET. This is necessary to allow the user to change the data manually. So everytime the table is updated, its contents are written back to DATASET. Is there a way to distinguish if the cell was changed by the user or by updateTable? i thought of disconnecting on_tableWidget_cellChanged by updateTable temporarily but that seems to be a little dirty.

  Read the article

• Memory leak in Qt signal and slots

  - by Ajay

  Hello, I am running valgrind on my Qt code,and even on successful exit of the application, get the following report from valgrind 8,832 bytes in 92 blocks are still reachable in loss record 12 of 12 at 0x4025390: operator new(unsigned int) (vg_replace_malloc.c:214) ==3339== by 0x4B75F05: QMutex::QMutex(QMutex::RecursionMode) (qmutex.cpp:123) ==3339== by 0x4B77602: QMutexPool::get(void const*) (qmutexpool.cpp:137) ==3339== by 0x4CA0EC2: signalSlotLock(QObject const*) (qobject.cpp:112) ==3339== by 0x4CA3939: QMetaObjectPrivate::connect(QObject const*, int, QObject const*, int, int, int*) (qobject.cpp:2900) ==3339== by 0x4CA5C00: QObject::connect(QObject const*, char const*, QObject const*, char const*, Qt::ConnectionType) (qobject.cpp:2599) I disconnect all signal connections and also delete the objects. The above mentioned leak increases if i increase the amount of signal and slot connections? Can anybody help with this?

  Read the article

• Signal amplitude against time (java)

  - by wsr74ws84

  Hi everyone , I'm racking my brain in order to solve a knotty problem (at least for me) While playing an audio file (using java) I want the signal amplitude to be displayed against time. I mean I'd like to implement a small panel showing a sort of oscilloscope .(SPECTRUM ANALYZER) The audio signal should be viewed in the time domain (vertical axis is amplitude and the horizontal axis is time) Does anyone know how to do it? Is there a good tutorial I can rely on? Since I know vwry little about java , I wish someone could help me . Thanks in advance.

  Read the article

• Can't catch newConnection() signal from QTcpServer

  - by Bob

  I am trying to make a simple server thread in QT to accept a connection, however although the server is listening (I can connect with my test app) I can't get the newConnection() signal to be acted on. Any help as to what I'm missing here would be much appreciated! class CServerThread : public QThread { Q_OBJECT protected: void run(); private: QTcpServer* server; public slots: void AcceptConnection(); }; void CServerThread::run() { server = new QTcpServer; QObject::connect(server, SIGNAL(newConnection()), this, SLOT(AcceptConnection())); server-listen(QHostAddress::Any, 1000); // Any port in a storm exec(); // Start event loop } void CServerThread::AcceptConnection() { OutputDebugStringA("\n***** INCOMING CONNECTION"); // This is never called! }

  Read the article

• POSIX Threads and signal masks

  - by Max

  Is there a way to change the signal mask of a thread from another thread? I am supposed to write a multithreaded C application that doesn't use mutex, semaphores and condition variables, only signals. So it would look like something like this: The main Thread sends SIGUSR1 to its process and and one of the 2 threads (not including the main thread), will respond to the signal and block SIGUSR1 from the sigmask and sleep. Then the main thread sends SIGUSR1 again, the other thread will respond, block SIGUSR1 from its sigmask, unblock SIGUSR1 from the other threads sigmask, so it will respond to SIGUSR1 again. So essentially whenever the main thread sends SIGUSR1 the two other threads swap between each other. Can somebody help?

  Read the article

• Calling a standard library function in signal handler.

  - by shadyabhi

  Why is calling a standard library function inside a signal handler discouraged?

  Read the article

• Prob comparing pointers and integer in C

  - by Dimitri

  Hi I have a problem with this code. When i am using this function I have no warnings. : void handler(int sig){ switch(sig) { case SIGINT : { click++; fprintf(stdout,"SIGINT recu\n"); if( click == N){ exit(0); } } case SIGALRM : fprintf(stdout,"SIGALRM received\n"); exit(0); case SIGTERM: fprintf(stdout,"SIGTERM received\n"); exit(0); } } But when i rewrite the function with this new version, I have a " comparison between pointer and integer" warning on the if statement: void handler( int sig){ printf("Signal recu\n"); if( signal == SIGINT){ click++; fprintf(stdout,"SIGINT received; Click = %d\n",click); if(click == N){ fprintf(stdout,"Exiting with SIGINT\n"); exit(0); } } else if(signal == SIGALRM){ fprintf(stdout,"SIGALRM received\n"); exit(0); } else if(signal == SIGTERM){ fprintf(stdout,"SIGTERM received\n"); exit(0); } Can someone tell me where is the prob?

  Read the article

• What are the performance differences between PCI-Express x16 and x4

  - by Cestarian

  I have two PCI-Express 2.0 x16 slots on my motherboard, but one of them is actually just x4. For passing through my graphics card to a virtual machine I need to use both slots simultaneously and unfortunately, the easiest way for me to achieve that is putting the stronger card in the x4 slot (secondary slot; I need the stronger card to be in the secondary slot, not the primary). As such I am wondering what sort of noticable performance differences I can expect from using the x4 slot with a strong card as opposed to having it in the true x16 slot. Does it limit the performance so much that the strong card in the x4 slot will actually perform worse than the significantly weaker card in the x16 slot? (For spec comparison I am using a GTX-670 in the x4 slot and GTX-550-Ti in the x16 slot) What implications does this have?

  Read the article

• handle SIGSEGV in Linux?

  - by user303967

  Hi all, I need handle the SIGSEGV in my Linux app. The reason is some clean up(3-partry lib) must be done before generate core-dump. What is more, the clean up must be performed in the context of calling thread, cannot do in signal handler. So I plan in signal handler to pass the control to the calling thread, after the clean up finished, then use raise(SIGSEGV) to generate the core-dump. The real problem seems the signal_handler cannot pass the control to calling thread, no matter I use post_sem or some others. Any idea to handle this case? Possbile to hijack the SIGSEGV, then in SIGSEGV hander return to another thread to perform some clean up? signal(SIGSEGV, signal_handler); signal_handler() { ... post_sem(); ... } calling thread() { wait_sem(); clean_up(); ... }

  Read the article

< Previous Page | 3 4 5 6 7 8 9 10 11 12 13 14  | Next Page >