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• Setting up Visual Studio 2010 to step into Microsoft .NET Source Code

  - by rajbk

  Using the Microsoft Symbol Server to obtain symbol debugging information is now much easier in VS 2010. Microsoft gives you access to their internet symbol server that contains symbol files for most of the .NET framework including the recently announced availability of MVC 2 Symbols.  SETUP In VS 2010 RTM, go to Tools –> Options –> Debugging –> General. Check “Enable .NET Framework source stepping” We get the following dialog box   This automatically disables “Enable My Code”   Go to Debugging –> Symbols and Check “Microsoft Symbol Servers”. You can selectively exclude modules if you want to.   You will get a warning dialog like so: Hitting OK will start the download process   The setup is complete. You are now ready to start debugging! DEBUGGING Add a break point to your application and run the application in debug mode (F5 shortcut for me). Go to your call stack when you hit the break point. Right click on a frame that is grayed out. Select “Load Symbols from” “Microsoft Symbol Servers”. VS will begin a one time download of that assembly. This assembly will be cached locally so you don’t have to wait for the download the next time you debug the app.   We get a one time license agreement dialog box You might see an error like the one below regarding different encoding (hopefully will be fixed).    Assemblies for which the symbols have been loaded are no longer grayed out. Double clicking on any entry in the call stack should now directly take you to the source code for that assembly. AFAIK, not all symbols are available on the MS symbol server. In cases like that you will see a tab like the one below and be given the option to “Show Disassembly”. Enjoy! Newsreel Announcer: Humiliated, Muntz vows a return to Paradise Falls and promises to capture the beast alive! Charles Muntz: [speaking to a large audience outside in the newsreel] I promise to capture the beast alive, and I will not come back until I do!

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• Wireless xbox360 pad connected with xboxdrv doesn't show in jstest

  - by Kyle Letham

  So Lubuntu 13.04, 3.4.0. I'm trying to use my wireless xbox controller. I've installed xboxdrv. I have to run it with sudo, or I get USBController::USBController(): libusb_open() failed: LIBUSB_ERROR_ACCESS. If I connect the adapter, run the program, and then press the button on the gamepad to connect it, it never really connects - just flashes like it's searching. If I reboot, leaving the controller searching, and run the command again while it's searching after I boot up, the controller connects (the light becomes solid in one corner). Using pkill xboxdrv and then relaunching it doesn't work. Regardless, no matter what I do, the gamepad never shows up in jstest-gtk. sudo xboxdrv --debug gives me: Controller: Microsoft Xbox 360 Wireless Controller (PC) Vendor/Product: 045e:0719 USB Path: 002:005 Wireless Port: 0 Controller Type: Xbox360 (wireless) [DEBUG] XboxdrvMain::run(): creating UInput [DEBUG] XboxdrvMain::run(): creating ControllerSlotConfig [DEBUG] UInput::create_uinput_device(): create device: 65534 [DEBUG] LinuxUinput::LinuxUinput(): Xbox Gamepad (userspace driver) 0:0 Any ideas?

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• what "Debug Assertion Failed" mean and how to fix it, c++?

  - by nonon

  hi, why this program gives me a "Debug Assertion Failed" Error Message while running #include "stdafx.h" #include "iostream" #include "fstream" #include "string" using namespace std; int conv_ch(char b) { int f; f=b; b=b+0; switch(b) { case 48: f=0; break; case 49: f=1; break; case 50: f=2; break; case 51: f=3; break; case 52: f=4; break; case 53: f=5; break; case 54: f=6; break; case 55: f=7; break; case 56: f=8; break; case 57: f=9; break; default: f=0; } return f; } class Student { public: string id; size_t id_len; string first_name; size_t first_len; string last_name; size_t last_len; string phone; size_t phone_len; string grade; size_t grade_len; void print(); void clean(); }; void Student::clean() { id.erase (id.begin()+6, id.end()); first_name.erase (first_name.begin()+15, first_name.end()); last_name.erase (last_name.begin()+15, last_name.end()); phone.erase (phone.begin()+10, phone.end()); grade.erase (grade.begin()+2, grade.end()); } void Student::print() { int i; for(i=0;i<6;i++) { cout<<id[i]; } cout<<endl; for(i=0;i<15;i++) { cout<<first_name[i]; } cout<<endl; for(i=0;i<15;i++) { cout<<last_name[i]; } cout<<endl; for(i=0;i<10;i++) { cout<<phone[i]; } cout<<endl; for(i=0;i<2;i++) { cout<<grade[i]; } cout<<endl; } int main() { Student k[80]; char data[1200]; int length,i,recn=0; int rec_length; int counter = 0; fstream myfile; char x1,x2; char y1,y2; char zz; int ad=0; int ser,j; myfile.open ("example.txt",ios::in); int right; int left; int middle; string key; while(!myfile.eof()){ myfile.get(data,1200); char * pch; pch = strtok (data, "#"); printf ("%s\n", pch); j=0; for(i=0;i<6;i++) { k[recn].id[i]=data[j]; j++; } for(i=0;i<15;i++) { k[recn].first_name[i]=data[j]; j++; } for(i=0;i<15;i++) { k[recn].last_name[i]=data[j]; j++; } for(i=0;i<10;i++) { k[recn].phone[i]=data[j]; j++; } for(i=0;i<2;i++) { k[recn].grade[i]=data[j]; j++; } recn++; j=0; } //cout<<recn; string temp1; size_t temp2; int temp3; for(i=0;i<recn-1;i++) { for(j=0;j<recn-1;j++) { if(k[i].id.compare(k[j].id)<0) { temp1 = k[i].first_name; k[i].first_name = k[j].first_name; k[j].first_name = temp1; temp2 = k[i].first_len; k[i].first_len = k[j].first_len; k[j].first_len = temp2; temp1 = k[i].last_name; k[i].last_name = k[j].last_name; k[j].last_name = temp1; temp2 = k[i].last_len; k[i].last_len = k[j].last_len; k[j].last_len = temp2; temp1 = k[i].grade; k[i].grade = k[j].grade; k[j].grade = temp1; temp2 = k[i].grade_len; k[i].grade_len = k[j].grade_len; k[j].grade_len = temp2; temp1 = k[i].id; k[i].id = k[j].id; k[j].id = temp1; temp2 = k[i].id_len; k[i].id_len = k[j].id_len; k[j].id_len = temp2; temp1 = k[i].phone; k[i].phone = k[j].phone; k[j].phone = temp1; temp2 = k[i].phone_len; k[i].phone_len = k[j].phone_len; k[j].phone_len = temp2; } } } for(i=0;i<recn-1;i++) { k[i].clean(); } char z; string id_sear; cout<<"Enter 1 to display , 2 to search , 3 to exit:"; cin>>z; while(1){ switch(z) { case '1': for(i=0;i<recn-1;i++) { k[i].print(); } break; case '2': cin>>key; right=0; left=recn-2; while(right<=left) { middle=((right+left)/2); if(key.compare(k[middle].id)==0){ cout<<"Founded"<<endl; k[middle].print(); break; } else if(key.compare(k[middle].id)<0) { left=middle-1; } else { right=middle+1; } } break; case '3': exit(0); break; } cout<<"Enter 1 to display , 2 to search , 3 to exit:"; cin>>z; } return 0; } the program reads from a file example.txt 313121crewwe matt 0114323111A # 433444cristinaee john 0113344325A+# 324311matte richee 3040554032B # the idea is to read fixed size field structure with a text seprator record strucutre

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• log4j floods my console

  - by srikanth VM

  This is the log4j.properties that i have in my app log4j.rootLogger=B C log4j.logger.A=INFO, A1 log4j.debug=false log4j.appender.A1=org.apache.log4j.ConsoleAppender log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %C - %m%n log4j.logger.B=INFO, A2 log4j.debug=false log4j.appender.A2=org.apache.log4j.FileAppender log4j.appender.A2.file=PRIME-log.txt log4j.appender.A2.layout=org.apache.log4j.PatternLayout log4j.appender.A2.layout.ConversionPattern=%d [%t] %-5p %C - %m%n log4j.logger.C=INFO, A3 log4j.appender.A3=org.apache.log4j.FileAppender log4j.appender.A3.file=employee_pass_regeneration-log.txt log4j.appender.A3.layout=org.apache.log4j.PatternLayout log4j.appender.A3.layout.ConversionPattern=%d [%t] %-5p %C - %m%n I only want File appender so i only use that , but some how my console is always flooded with DEBUG messages which i have never used 8704 [http-8080-2] DEBUG org.springframework.web.servlet.view.JstlView - Rendering view with name 'passIndex' with model null and static attributes {} I guess these are all system messages , but with these debug messages its really hard to debug actually i mean i cannot find my own sysouts i tried log4j.debug=false but still i get these messages

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• Linking with Boost error

  - by drhorrible

  I just downloaded and ran the boost installer for version 1.42 (from boostpro.com), and set up my project according to the getting started guide. However, when I build the program, I get this linker error: LINK : fatal error LNK1104: cannot open file 'libboost_program_options-vc90-mt-gd-1_42.lib' The build log adds this (I've replaced project-specific paths with *'s): Creating temporary file "******\Debug\RSP00001252363252.rsp" with contents [ /OUT:"*********.exe" /INCREMENTAL /LIBPATH:"C:\Program Files\boost\boost_1_42_0\lib" /MANIFEST /MANIFESTFILE:"Debug\hw6.exe.intermediate.manifest" /MANIFESTUAC:"level='asInvoker' uiAccess='false'" /DEBUG /PDB:"********\Debug\***.pdb" /SUBSYSTEM:CONSOLE /DYNAMICBASE /NXCOMPAT /MACHINE:X86 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib ".\Debug\****.obj" ".\Debug\****.exe.embed.manifest.res" ] Creating command line "link.exe @********\Debug\RSP00001252363252.rsp /NOLOGO /ERRORREPORT:PROMPT" I've also emailed [email protected] (with a message very similar to this), but I thought maybe so would be faster.

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• Debugging Visual Studio 2010 Unit Test and WCF Service in one IDE instance

  - by Dr.HappyPants

  I have created a WCF service in Visual Studio 2010 along with some supporting assemblies. I have also created a test project which contains multiple unit tests for the service and the supporting assemblies. Right now I have them all in one solution with the Test project having a service reference (http) to the WCF service. If I debug the WCF service and select "Run checked tests" in a Test List I created, I can debug the WCF service without a problem. Note: I cannot select Debug Checked Tests while debugging the WCF service. (Because the IDE is already debugging?) If I open the Test project in another instance of VS 2010, debug the WCF service and then select "Debug Checked Tests" - I can debug both my tests and the WCF service. However - I would like to (and my question is) be able to debug my tests and my service in a single IDE. Is this possible?

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• What does !! (double exclamation point) mean?

  - by molecules

  In the code below, from a blog post by Alias, I noticed the use of the double exclamation point !!. I was wondering what it meant and where I could go in the future to find explanations for Perl syntax like this. (Yes, I already searched for '!!' at perlsyn). package Foo; use vars qw{$DEBUG}; BEGIN { $DEBUG = 0 unless defined $DEBUG; } use constant DEBUG => !! $DEBUG; sub foo { debug('In sub foo') if DEBUG; ... } UPDATE Thanks for all of your answers. Here is something else I just found that is related The List Squash Operator x!!

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• MS Build Server 2010 - Buffer Overflow

  - by user329005

  Hey everybody, I try to build an solution in MS Build Server (MS Visual Studio 2010 ver 10.0.30319.1) about ServerTasks - Builds - Server Task Builder - Queue new Built and go, 47 seconds later I get an error output: CSC: Unexpected error creating debug information file 'c:\Builds\1\ServerTasks\Server-Tasks Builder\Sources\ThirdParty\Sources\samus-mongodb-csharp-2b8934f\MongoDB.Linq\obj\Debug\MongoDB.Linq.PDB' -- 'c:\Builds\1\ServerTasks\Server-Tasks Builder\Sources\ThirdParty\Sources\samus-mongodb-csharp-2b8934f\MongoDB.Linq\obj\Debug\MongoDB.Linq.pdb: Access denied I checked the permissions of directory and set it (for debug purposes only) to grant access for all users, but still having an issue. Running the Procmon and filter file access for directory: 'c:\Builds\1\ServerTasks\Server-Tasks Builder\Sources\ThirdParty\Sources\samus-mongodb-csharp-2b8934f\MongoDB.Linq\obj\Debug\' tells me: 16:41:00,5449813 TFSBuildServiceHost.exe 3528 QuerySecurityFile C:\Builds\1\ServerTasks\Server-Tasks Builder\Sources\ThirdParty\Sources\samus-mongodb-csharp-2b8934f\MongoDB.Linq\obj\Debug BUFFER OVERFLOW Information: DACL, 0x20000000 and 16:41:00,5462119 TFSBuildServiceHost.exe 3528 QueryOpen C:\Builds\1\ServerTasks\Server-Tasks Builder\Sources\ThirdParty\Sources\samus-mongodb-csharp-2b8934f\MongoDB.Linq\obj\Debug FAST IO DISALLOWED Any ideas?

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• how to install SystemTap on Ubuntu

  - by jeevan thapa

  I am new to Ubuntu. I follow the instruction from http://sourceware.org/systemtap/wiki/SystemtapOnUbuntu that is necessary to install SystemTap on Ubuntu. I lost in Step 4. How can i run step 4: ? Setp 4: sudo apt-get install elfutils, for eu-readelf Then run this script as root, whenever you install additional debug symbols for file in `find /usr/lib/debug -name '*.ko' -print` do buildid=`eu-readelf -n $file| grep Build.ID: | awk '{print $3}'` dir=`echo $buildid | cut -c1-2` fn=`echo $buildid | cut -c3-` mkdir -p /usr/lib/debug/.build-id/$dir ln -s $file /usr/lib/debug/.build-id/$dir/$fn ln -s $file /usr/lib/debug/.build-id/$dir/${fn}.debug done This makes available the module probes available and is friendly to other debug symbol savvy apps like gdb and oprofile. This convention should make it's way into Ubuntu in the near future.

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• Why Is my json-object from AJAX not understood by javascript, even with 'json' dataType?

  - by pete

  My js code simply gets a json object from my server, but I think it should be automatically parsed and turned into an object with properties, yet it's not allowing access properly. $.ajax({ type: 'POST', url: '/misc/json-sample.js', data: {href: path}, // THIS IS THE POST DATA THAT IS PASSED IN TO THE DRUPAL MENU CALL TO GET THE MENU... dataType: 'json', success: function (datax) { if (datax.debug) { alert('Debug data: ' + datax.debug); } else { alert('No debug data: ' + datax.toSource() ) ; } The /misc/json-sample.js file is: [ { "path": "examplemodule/parent1/child1/grandchild1", "title": "First grandchild option", "children": false } ] (I have also been trying to return that object from drupal as follows, and the same results.) Drupal version of misc/json-sample.js: $items[] = array( 'path' = 'examplemodule/parent1/child1/grandchild1', 'title' = t('First grandchild option'), 'debug' = t('debug me!'), 'children' = FALSE ); print drupal_to_js($items); What happens (in FF, which has the toSource() capability) is the alert with 'No debug data: [ { "path": "examplemodule/parent1/child1/grandchild1", "title": "First grandchild option", "children": false } ] Thanks

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• Linux, GNU GCC, ld, version scripts and the ELF binary format -- How does it work??

  - by themoondothshine

  Hey all, I'm trying to learn more about library versioning in Linux and how to put it all to work. Here's the context: -- I have two versions of a dynamic library which expose the same set of interfaces, say libsome1.so and libsome2.so. -- An application is linked against libsome1.so. -- This application uses libdl.so to dynamically load another module, say libmagic.so. -- Now libmagic.so is linked against libsome2.so. Obviously, without using linker scripts to hide symbols in libmagic.so, at run-time all calls to interfaces in libsome2.so are resolved to libsome1.so. This can be confirmed by checking the value returned by libVersion() against the value of the macro LIB_VERSION. -- So I try next to compile and link libmagic.so with a linker script which hides all symbols except 3 which are defined in libmagic.so and are exported by it. This works... Or at least libVersion() and LIB_VERSION values match (and it reports version 2 not 1). -- However, when some data structures are serialized to disk, I noticed some corruption. In the application's directory if I delete libsome1.so and create a soft link in its place to point to libsome2.so, everything works as expected and the same corruption does not happen. I can't help but think that this may be caused due to some conflict in the run-time linker's resolution of symbols. I've tried many things, like trying to link libsome2.so so that all symbols are alised to symbol@@VER_2 (which I am still confused about because the command nm -CD libsome2.so still lists symbols as symbol and not symbol@@VER_2)... Nothing seems to work!!! Help!!!!!! Edit: I should have mentioned it earlier, but the app in question is Firefox, and libsome1.so is libsqlite3.so shipped with it. I don't quite have the option of recompiling them. Also, using version scripts to hide symbols seems to be the only solution right now. So what really happens when symbols are hidden? Do they become 'local' to the SO? Does rtld have no knowledge of their existence? What happens when an exported function refers to a hidden symbol?

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• Hi, I have a C hashing routine which is behaving strangely?

  - by aks

  Hi, In this hashing routine: 1.) I am able to add strings. 2.) I am able to view my added strings. 3.) When i try to add a duplicate string, it throws me an error saying already present. 4.) But, when i try to delete the same string which is already present in hash table, then the lookup_routine calls hash function to get an index. At this time, it throws a different hash index to the one it was already added. Hence, my delete routine is failing? I am able to understand the reason why for same string, hash fucntion calculates a different index each time (whereas the same logic works in view hash table routine)? Can someone help me? This is the Output, i am getting: $ ./a Press 1 to add an element to the hashtable Press 2 to delete an element from the hashtable Press 3 to search the hashtable Press 4 to view the hashtable Press 5 to exit Please enter your choice: 1 Please enter the string :gaura enters in add_string DEBUG purpose in hash function: str passed = gaura Hashval returned in hash func= 1 hashval = 1 enters in lookup_string str in lookup_string = gaura DEBUG purpose in hash function: str passed = gaura Hashval returned in hash func= 1 hashval = 1 DEBUG ERROR :element not found in lookup string DEBUG Purpose NULL Inserting... DEBUG1 : enters here hashval = 1 String added successfully Press 1 to add an element to the hashtable Press 2 to delete an element from the hashtable Press 3 to search the hashtable Press 4 to view the hashtable Press 5 to exit Please enter your choice: 1 Please enter the string :ayu enters in add_string DEBUG purpose in hash function: str passed = ayu Hashval returned in hash func= 1 hashval = 1 enters in lookup_string str in lookup_string = ayu DEBUG purpose in hash function: str passed = ayu Hashval returned in hash func= 1 hashval = 1 returns NULL in lookup_string DEBUG Purpose NULL Inserting... DEBUG2 : enters here hashval = 1 String added successfully Press 1 to add an element to the hashtable Press 2 to delete an element from the hashtable Press 3 to search the hashtable Press 4 to view the hashtable Press 5 to exit Please enter your choice: 1 Please enter the string :gaurava enters in add_string DEBUG purpose in hash function: str passed = gaurava Hashval returned in hash func= 7 hashval = 7 enters in lookup_string str in lookup_string = gaurava DEBUG purpose in hash function: str passed = gaurava Hashval returned in hash func= 7 hashval = 7 DEBUG ERROR :element not found in lookup string DEBUG Purpose NULL Inserting... DEBUG1 : enters here hashval = 7 String added successfully Press 1 to add an element to the hashtable Press 2 to delete an element from the hashtable Press 3 to search the hashtable Press 4 to view the hashtable Press 5 to exit Please enter your choice: 4 Index : i = 1 String = gaura ayu Index : i = 7 String = gaurava Press 1 to add an element to the hashtable Press 2 to delete an element from the hashtable Press 3 to search the hashtable Press 4 to view the hashtable Press 5 to exit Please enter your choice: 2 Please enter the string you want to delete :gaura String entered = gaura enters in delete_string DEBUG purpose in hash function: str passed = gaura Hashval returned in hash func= 0 hashval = 0 enters in lookup_string str in lookup_string = gaura DEBUG purpose in hash function: str passed = gaura Hashval returned in hash func= 0 hashval = 0 DEBUG ERROR :element not found in lookup string DEBUG Purpose Item not present. So, cannot be deleted Item found in list: Deletion failed Press 1 to add an element to the hashtable Press 2 to delete an element from the hashtable Press 3 to search the hashtable Press 4 to view the hashtable Press 5 to exit Please enter your choice: My routine is pasted below: include include struct list { char *string; struct list *next; }; struct hash_table { int size; /* the size of the table */ struct list *table; / the table elements */ }; struct hash_table * hashtable = NULL; struct hash_table *create_hash_table(int size) { struct hash_table *new_table; int i; if (size<1) return NULL; /* invalid size for table */ /* Attempt to allocate memory for the table structure */ if ((new_table = malloc(sizeof(struct hash_table))) == NULL) { return NULL; } /* Attempt to allocate memory for the table itself */ if ((new_table->table = malloc(sizeof(struct list *) * size)) == NULL) { return NULL; } /* Initialize the elements of the table */ for(i=0; i<size; i++) new_table->table[i] = '\0'; /* Set the table's size */ new_table->size = size; return new_table; } unsigned int hash(struct hash_table *hashtable, char *str) { printf("\n DEBUG purpose in hash function:\n"); printf("\n str passed = %s", str); unsigned int hashval = 0; int i = 0; for(; *str != '\0'; str++) { hashval += str[i]; i++; } hashval = hashval % 10; printf("\n Hashval returned in hash func= %d", hashval); return hashval; } struct list *lookup_string(struct hash_table *hashtable, char *str) { printf("\n enters in lookup_string \n"); printf("\n str in lookup_string = %s",str); struct list * new_list; unsigned int hashval = hash(hashtable, str); printf("\n hashval = %d \n", hashval); if(hashtable->table[hashval] == NULL) { printf("\n DEBUG ERROR :element not found in lookup string \n"); return NULL; } /* Go to the correct list based on the hash value and see if str is * in the list. If it is, return return a pointer to the list element. * If it isn't, the item isn't in the table, so return NULL. */ for(new_list = hashtable->table[hashval]; new_list != NULL;new_list = new_list->next) { if (strcmp(str, new_list->string) == 0) return new_list; } printf("\n returns NULL in lookup_string \n"); return NULL; } int add_string(struct hash_table *hashtable, char *str) { printf("\n enters in add_string \n"); struct list *new_list; struct list *current_list; unsigned int hashval = hash(hashtable, str); printf("\n hashval = %d", hashval); /* Attempt to allocate memory for list */ if ((new_list = malloc(sizeof(struct list))) == NULL) { printf("\n enters here \n"); return 1; } /* Does item already exist? */ current_list = lookup_string(hashtable, str); if (current_list == NULL) { printf("\n DEBUG Purpose \n"); printf("\n NULL \n"); } /* item already exists, don't insert it again. */ if (current_list != NULL) { printf("\n Item already present...\n"); return 2; } /* Insert into list */ printf("\n Inserting...\n"); new_list->string = strdup(str); new_list->next = NULL; //new_list->next = hashtable->table[hashval]; if(hashtable->table[hashval] == NULL) { printf("\n DEBUG1 : enters here \n"); printf("\n hashval = %d", hashval); hashtable->table[hashval] = new_list; } else { printf("\n DEBUG2 : enters here \n"); printf("\n hashval = %d", hashval); struct list * temp_list = hashtable->table[hashval]; while(temp_list->next!=NULL) temp_list = temp_list->next; temp_list->next = new_list; // hashtable->table[hashval] = new_list; } return 0; } int delete_string(struct hash_table *hashtable, char *str) { printf("\n enters in delete_string \n"); struct list *new_list; struct list *current_list; unsigned int hashval = hash(hashtable, str); printf("\n hashval = %d", hashval); /* Does item already exist? */ current_list = lookup_string(hashtable, str); if (current_list == NULL) { printf("\n DEBUG Purpose \n"); printf("\n Item not present. So, cannot be deleted \n"); return 1; } /* item exists, delete it. */ if (current_list != NULL) { struct list * temp = hashtable->table[hashval]; if(strcmp(temp->string,str) == 0) { if(temp->next == NULL) { hashtable->table[hashval] = NULL; free(temp); } else { hashtable->table[hashval] = temp->next; free(temp); } } else { struct list * temp1; while(temp->next != NULL) { temp1 = temp; if(strcmp(temp->string, str) == 0) { break; } else { temp = temp->next; } } if(temp->next == NULL) { temp1->next = NULL; free(temp); } else { temp1->next = temp->next; free(temp); } } } return 0; } void free_table(struct hash_table *hashtable) { int i; struct list *new_list, *temp_list; if (hashtable==NULL) return; /* Free the memory for every item in the table, including the * strings themselves. */ for(i=0; i<hashtable->size; i++) { new_list = hashtable->table[i]; while(new_list!=NULL) { temp_list = new_list; new_list = new_list->next; free(temp_list->string); free(temp_list); } } /* Free the table itself */ free(hashtable->table); free(hashtable); } void view_hashtable(struct hash_table * hashtable) { int i = 0; if(hashtable == NULL) return; for(i =0; i < hashtable->size; i++) { if((hashtable->table[i] == 0) || (strcmp(hashtable->table[i]->string, "*") == 0)) { continue; } printf(" Index : i = %d\t String = %s",i, hashtable->table[i]->string); struct list * temp = hashtable->table[i]->next; while(temp != NULL) { printf("\t %s",temp->string); temp = temp->next; } printf("\n"); } } int main() { hashtable = create_hash_table(10); if(hashtable == NULL) { printf("\n Memory allocation failure during creation of hash table \n"); return 0; } int flag = 1; while(flag) { int choice; printf("\n Press 1 to add an element to the hashtable\n"); printf("\n Press 2 to delete an element from the hashtable\n"); printf("\n Press 3 to search the hashtable\n"); printf("\n Press 4 to view the hashtable\n"); printf("\n Press 5 to exit \n"); printf("\n Please enter your choice: "); scanf("%d",&choice); if(choice == 5) flag = 0; else if(choice == 1) { char str[20]; printf("\n Please enter the string :"); scanf("%s",&str); int i; i = add_string(hashtable,str); if(i == 1) { printf("\n Memory allocation failure:Choice 1 \n"); return 0; } else if(i == 2) { printf("\n String already prsent in hash table : Couldnot add it again\n"); return 0; } else { printf("\n String added successfully \n"); } } else if(choice == 2) { int i; struct list * temp_list; char str[20]; printf("\n Please enter the string you want to delete :"); scanf("%s",&str); printf("\n String entered = %s", str); i = delete_string(hashtable,str); if(i == 0) { printf("\n Item found in list: Deletion success \n"); } else printf("\n Item found in list: Deletion failed \n"); } else if(choice == 3) { struct list * temp_list; char str[20]; printf("\n Please enter the string :"); scanf("%s",&str); temp_list = lookup_string(hashtable,str); if(!temp_list) { printf("\n Item not found in list: Deletion failed \n"); return 0; } printf("\n Item found: Present in Hash Table \n"); } else if(choice == 4) { view_hashtable(hashtable); } else if(choice == 5) { printf("\n Exiting ...."); return 0; } else printf("\n Invalid choice:"); }; free_table(hashtable); return 0; }

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• Regular Windows 7 BSOD with Shrew VPN client

  - by Junto

  The Shrew VPN client appears to be a good alternative to the Cisco VPN Client on x64 Windows 7. However, since installing it I've seen fairly regular BSODs. Minidump attached: Microsoft (R) Windows Debugger Version 6.11.0001.404 AMD64 Copyright (c) Microsoft Corporation. All rights reserved. Loading Dump File [D:\Temp\020810-23431-01.dmp] Mini Kernel Dump File: Only registers and stack trace are available Symbol search path is: SRV*d:\symbols*http://msdl.microsoft.com/download/symbols Executable search path is: Windows 7 Kernel Version 7600 MP (8 procs) Free x64 Product: WinNt, suite: TerminalServer SingleUserTS Built by: 7600.16385.amd64fre.win7_rtm.090713-1255 Machine Name: Kernel base = 0xfffff800`0285f000 PsLoadedModuleList = 0xfffff800`02a9ce50 Debug session time: Mon Feb 8 18:08:12.887 2010 (GMT+1) System Uptime: 0 days 7:52:06.120 Loading Kernel Symbols ............................................................... ................................................................ .............. Loading User Symbols Loading unloaded module list .... ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* Use !analyze -v to get detailed debugging information. BugCheck A, {0, 2, 0, fffff800028d50b6} Unable to load image \SystemRoot\system32\DRIVERS\vfilter.sys, Win32 error 0n2 *** WARNING: Unable to verify timestamp for vfilter.sys *** ERROR: Module load completed but symbols could not be loaded for vfilter.sys Probably caused by : vfilter.sys ( vfilter+29a6 ) Followup: MachineOwner Machine is a brand spanking new Dell Precision T5500. Superuser appears to have several recommendations for the Shrew VPN Client as an alternative to the Cisco VPN client on 64 bit machines, so I wondered if anyone here has seen this problem and possibly found a solution to the problem? I've decided to run the VPN client under Windows 7 compatibility mode for the moment (Vista SP2) with administrator privileges to see if it makes a difference. Oddly, the VPN doesn't necessarily need to be connected. I've noticed it when browsing using Google Chrome and Internet Explorer, usually when I open up a new tab. If it carries on I think I'll be forced to shell out the 120 EUR for the NCP Client instead.

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• Gedit opens on all workspaces?

  - by debug

  Im using Fedora 10 with XFCE. Every time I open Gedit, it opens a instance on every workspace. The circle icon on my window border is selected (meaning, enabled on all workspaces). When I disable it to appear on one workspace, then close and restart, Gedit opens normal (current workspace). Question is: How to keep this current configuration? If I restart my system, and start up Gedit, it appears on all workspaces again.

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• Easily typing unicode letters to a HTML form

  - by Elazar Leibovich

  Is there a program or a key map that allows me to easily type mathematcial symbols and unicode letters such as these symbols in a web form? Maybe a keyboard mapping? An assitant program? (What I'm doing now is, copy-pasting relevant symbols, which is far from convenient...)

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• forced reformat without login / and bootcamp

  - by debug

  ok.. im pretty good with stuff like this, but I have a question. I have mac mini with 10.5.(x) on one partition, and bootcamp (windows) on the other. My boss wants me to reformat the whole mac (10.6 (x)), which is usually easy. He does not remember his password to login, which means I cannot log in and allocate the bootcamp back to one partition using Disk Utility, then reformat the whole drive. When I insert the Snow leopard CD, I can only wipe out one partition, my question is: Is there a way to force a wipe out of both drives in the boot sequence? Any help to wipe out this whole drive and do a clean install would be helpful.. Thanks superusers!

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• Force caching of handler output which actively resists caching

  - by deceze

  I'm trying to force caching of a very obnoxious piece of PHP script which actively tries to resist caching for no good reason by actively setting all the anti-cache headers: Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Content-Type: text/html; charset=UTF-8 Date: Thu, 22 May 2014 08:43:53 GMT Expires: Thu, 19 Nov 1981 08:52:00 GMT Last-Modified: Pragma: no-cache Set-Cookie: ECSESSID=...; path=/ Vary: User-Agent,Accept-Encoding Server: Apache/2.4.6 (Ubuntu) X-Powered-By: PHP/5.5.3-1ubuntu2.3 If at all avoidable I do not want to have to modify this 3rd party piece of code at all and instead just get Apache to cache the page for a while. I'm doing this very selectively to only very specific pages which have no real impact on session cookies or the like, i.e. which do not contain any personalised information. CacheDefaultExpire 600 CacheMinExpire 600 CacheMaxExpire 1800 CacheHeader On CacheDetailHeader On CacheIgnoreHeaders Set-Cookie CacheIgnoreCacheControl On CacheIgnoreNoLastMod On CacheStoreExpired On CacheStoreNoStore On CacheLock On CacheEnable disk /the/script.php Apache is caching the page alright: [cache:debug] AH00698: cache: Key for entity /the/script.php?(null) is http://example.com:80/the/script.php? [cache_disk:debug] AH00709: Recalled cached URL info header http://example.com:80/the/script.php? [cache_disk:debug] AH00720: Recalled headers for URL http://example.com:80/the/script.php? [cache:debug] AH00695: Cached response for /the/script.php isn't fresh. Adding conditional request headers. [cache:debug] AH00750: Adding CACHE_SAVE filter for /the/script.php [cache:debug] AH00751: Adding CACHE_REMOVE_URL filter for /the/script.php [cache:debug] AH00769: cache: Caching url: /the/script.php [cache:debug] AH00770: cache: Removing CACHE_REMOVE_URL filter. [cache_disk:debug] AH00737: commit_entity: Headers and body for URL http://example.com:80/the/script.php? cached. However, it is always insisting that the "cached response isn't fresh" and is never serving the cached version. I guess this has to do with the Expires header, which marks the document as expired (but I don't know whether that's the correct assumption). I've tried to overwrite and unset headers using mod_headers, but this doesn't help; whatever combination I try the cache is not impressed at all. I'm guessing that the order of operation is wrong, and headers are being rewritten after the cache sees them. early header processing doesn't help either. I've experimented with CacheQuickHandler Off and trying to set explicit filter chains, but nothing is helping. But I'm really mostly poking in the dark, as I do not have a lot of experience with configuring Apache filter chains. Is there a straight forward solution for how to cache this obnoxious piece of code?

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• BizTalk 2010 upgrade - Sunset Development/Deployment Modes

  - by Ahsan Alam

  Those who are familiar with BizTalk 2006, should know about Development and Deployment modes in Visual Studio. Personally, I never questioned why it's not Debug and Release just like everything else in Visual Studio. Then everything changed in BizTalk 2010. BizTalk and Visual Studio 2010 now uses Debug and Release modes by default. When we upgraded BizTalk 2006 solution to 2010, Development and Deployment modes remained unchanged for all the projects, and code compiled without any issues. Soon, I realized that any new projects added to the converted solutions started using Debug and Release modes. This also didn't cause any problem compiling the solution from Visual Studio; however, it broke our custom build/deployment scripts since the scripts were trying to build in Deployment mode. So, I decided to change all projects from Development and Deployment modes to Debug and Release modes to keep them consistent. During this process I realized that Debug and Release modes are defaults; but it's completely customizable. During the BizTalk 2010 upgrade process, I figured that switching to default Debug and Release modes are the best options.

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• Text contains characters that cannot be resolved by this SpriteFont

  - by Appeltaart

  I'm trying to draw currency symbols in an Arial Spritefont. According to thissite, the font contains these symbols. I've included the Unicode character region for these symbols in the Content Processor SpriteFont file, like so: <CharacterRegions> <CharacterRegion> <Start>&#32;</Start> <End>&#126;</End> </CharacterRegion> <CharacterRegion> <!-- Currency symbols --> <Start>&#8352;</Start> <End>&#8378;</End> </CharacterRegion> </CharacterRegions> However, whenever I try to draw a € (Euro) symbol, I get this exception: Text contains characters that cannot be resolved by this SpriteFont Inspecting the SpriteFont in the IDE at that breakpoint shows the € symbol is in there. I'm at a loss at what could be wrong. Why is this exception thrown?

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• "VLC could not read the file" error when trying to play DVDs

  - by stephenmurdoch

  I can watch most DVD's on my machine using VLC but today, I went to watch Thor, and it won't play. libdvdread4 and libdvdcss2 are at the latest versions. vlc -v returns 1.1.4 w32codecs are installed and reinstalled ubuntu-restricted-extras are same as above My machine recognises the disc and I can open the folder and browse the assorted .vob files, of which there are many. None of them will open in VLC, or in MPlayer etc. When I run vlc -vvv /media/THOR/VIDEO_TS/VTS_03_1.VOB I get: File Reading Failed VLC could not read the file I also see command line output like this: [0x963f47c] main filter debug: removing module "swscale" [0x963a4b4] main generic debug: A filter to adapt decoder to display is needed [0x964be84] main filter debug: looking for video filter2 module: 18 candidates [0x964be84] swscale filter debug: 720x576 chroma: I420 -> 979x551 chroma: RV32 with scaling using Bicubic (good quality) [0x964be84] main filter debug: using video filter2 module "swscale" ..... [0x959f4e4] main video output warning: late picture skipped (-10038 > -15327) [0x963a4b4] main generic debug: auto hidding mouse [0x93ca094] main input warning: clock gap, unexpected stream discontinuity [0x93ca094] main input warning: feeding synchro with a new reference point trying to recover from clock gap [0x959f4e4] main video output warning: early picture skipped ...... ac-tex damaged at 0 12 ac-tex damaged at 6 20 ac-tex damaged at 12 28 This happens with onboard and Known Good USB DVD player I don't have standalone DVD player to try with TV I am going to watch another film instead for now, because I can do that. I just can't watch THOR, and I'm pretty confident that the disc is ok. It is a rental, but it's clean and there are no surface abrasions. I even cleaned it with Christian Dior aftershave to make sure.

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• I am trying to install Kubuntu, but I get a metalink error

  - by Brook Bentley

  It looks like the ISO metalink is broken for the Kubuntu install from Wubi. Can you please fix this? Or, help me figure out what I'm doing wrong. I receive the following error: 'An error occurred: Cannot download the metalink and therefore the ISO For more information, please see the log file: c:\users\bbentley\appdata\local\temp\wubi-12.04-rev269.log' The log file contains the following errors: '08-30 14:28 DEBUG TaskList: ### Running get_metalink... 08-30 14:28 DEBUG downloader: downloading http://releases.ubuntu.com/kubuntu/12.04/kubuntu-12.04-desktop-amd64.metalink > C:\ubuntu\install 08-30 14:28 ERROR CommonBackend: Cannot download metalink file err=[Errno 14] HTTP Error 404: Not Found 08-30 14:28 DEBUG downloader: downloading http://cdimage.ubuntu.com/kubuntu/daily-live/current/precise-desktop-amd64.metalink > C:\ubuntu\install 08-30 14:28 ERROR CommonBackend: Cannot download metalink file2 err=[Errno 14] HTTP Error 404: Not Found 08-30 14:28 DEBUG TaskList: ### Finished get_metalink 08-30 14:28 ERROR TaskList: Cannot download the metalink and therefore the ISO Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\backend.py", line 595, in get_iso File "\lib\wubi\backends\common\backend.py", line 406, in download_iso Exception: Cannot download the metalink and therefore the ISO 08-30 14:28 DEBUG TaskList: # Cancelling tasklist 08-30 14:28 DEBUG TaskList: # Finished tasklist 08-30 14:28 ERROR root: Cannot download the metalink and therefore the ISO Traceback (most recent call last): File "\lib\wubi\application.py", line 58, in run File "\lib\wubi\application.py", line 132, in select_task File "\lib\wubi\application.py", line 158, in run_installer File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\backend.py", line 595, in get_iso File "\lib\wubi\backends\common\backend.py", line 406, in download_iso Exception: Cannot download the metalink and therefore the ISO'

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• Permission denied error when trying to install with wubi

  - by badri

  I run into problem when tried to install Ubuntu 11.04 on Windows 7 using wubi installer . It downloads the image for sometime and ends up with the error that says Permission denied: for more details see the log file In the log it seems to be like DownloadError: Problem connecting to tracker - urlopen error (10060, 'Operation timed out') but my network is good and I checked it. Tried using wubi several times, but ends up with same problem. Log content: 10-08 16:56 DEBUG TaskList: ### Finished get_metalink 10-08 16:56 DEBUG TaskList: New task download 10-08 16:56 DEBUG TaskList: ### Running download... 10-08 16:56 DEBUG btdownloader: downloading http://releases.ubuntu.com/11.04/ubuntu-11.04-desktop-amd64.iso.torrent > C:\ubuntu\install\ubuntu-11.04-desktop-amd64.iso 10-08 18:02 ERROR TaskList: Traceback (most recent call last): File "\lib\bittorrent\RawServer.py", line 229, in listen_forever File "\lib\wubi\backends\common\btdownloader.py", line 70, in error_callback DownloadError: Traceback (most recent call last): File "\lib\bittorrent\RawServer.py", line 221, in listen_forever File "\lib\bittorrent\Rerequester.py", line 96, in fail File "\lib\wubi\backends\common\btdownloader.py", line 70, in error_callback DownloadError: Problem connecting to tracker - urlopen error (10060, 'Operation timed out') Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\btdownloader.py", line 79, in download File "\lib\bittorrent\download.py", line 303, in download File "\lib\bittorrent\RawServer.py", line 256, in listen_forever File "\lib\wubi\backends\common\btdownloader.py", line 70, in error_callback DownloadError: Traceback (most recent call last): File "\lib\bittorrent\RawServer.py", line 229, in listen_forever File "\lib\wubi\backends\common\btdownloader.py", line 70, in error_callback DownloadError: Traceback (most recent call last): File "\lib\bittorrent\RawServer.py", line 221, in listen_forever File "\lib\bittorrent\Rerequester.py", line 96, in fail File "\lib\wubi\backends\common\btdownloader.py", line 70, in error_callback DownloadError: Problem connecting to tracker - urlopen error (10060, 'Operation timed out') 10-08 18:02 ERROR TaskList: Non fatal error Traceback (most recent call last): File "\lib\bittorrent\RawServer.py", line 229, in listen_forever File "\lib\wubi\backends\common\btdownloader.py", line 70, in error_callback DownloadError: Traceback (most recent call last): File "\lib\bittorrent\RawServer.py", line 221, in listen_forever File "\lib\bittorrent\Rerequester.py", line 96, in fail File "\lib\wubi\backends\common\btdownloader.py", line 70, in error_callback DownloadError: Problem connecting to tracker - urlopen error (10060, 'Operation timed out') in task download 10-08 18:02 DEBUG TaskList: ### Finished download 10-08 18:02 ERROR TaskList: [Errno 13] Permission denied: u'C:\\ubuntu\\install\\ubuntu-11.04-desktop-amd64.iso' Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\backend.py", line 492, in get_iso File "\lib\wubi\backends\common\backend.py", line 347, in download_iso OSError: [Errno 13] Permission denied: u'C:\\ubuntu\\install\\ubuntu-11.04-desktop-amd64.iso' 10-08 18:02 DEBUG TaskList: # Cancelling tasklist 10-08 18:02 DEBUG TaskList: # Finished tasklist 10-08 18:02 ERROR root: [Errno 13] Permission denied: u'C:\\ubuntu\\install\\ubuntu-11.04-desktop-amd64.iso' Traceback (most recent call last): File "\lib\wubi\application.py", line 57, in run File "\lib\wubi\application.py", line 131, in select_task File "\lib\wubi\application.py", line 157, in run_installer File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\backend.py", line 492, in get_iso File "\lib\wubi\backends\common\backend.py", line 347, in download_iso OSError: [Errno 13] Permission denied: u'C:\\ubuntu\\install\\ubuntu-11.04-desktop-amd64.iso'

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• How can I debug VGA Out on an iPad?

  - by Elliot

  The Dock Connector to VGA Adapter (required for VGA out on the iPad) uses the Dock Connector, so I can't have my laptop connected at the same time. I remember reading something about a Remote debugger, but despite lots of searching, I'm unable to find it. How can I run the debugger to test VGA output of my iPad app?

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• Sensor Manager getOrientation, doesnt display text and only works in debug mode?

  - by Aidan

  Hi Guys, My code appears to crash. I'm trying to setup a SensorManager for getting the Orientation of the device. I also have a listener that should update when conditions change. But when I run this code it crashes... public void sensor(){ // Locate the SensorManager using Activity.getSystemService sm = (SensorManager) getSystemService(SENSOR_SERVICE); sm.getOrientation(mR, mOrientation); // Register your SensorListener sm.registerListener(sl, sm.getDefaultSensor(Sensor.TYPE_ORIENTATION),SensorManager.SENSOR_DELAY_NORMAL); } private final SensorEventListener sl = new SensorEventListener() { @Override public void onAccuracyChanged(Sensor sensor, int accuracy) { } @Override public void onSensorChanged(SensorEvent event) { if (event.sensor.getType()==Sensor.TYPE_ORIENTATION) { Global.Orientation = "Orientation is equal to: "+ SensorManager.getOrientation(mR, mOrientation); } } sm is defined as SensorManager sm; as a class wide variable also. I've got some other classes outputting the Orientation to a screen which I know works. The problem is somewhere in these methods. Am I doing it wrong or Is there a better way of doing this?

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• Debug .NET app with IIS7 and Delphi.NET - Use aspnet_regiis.exe to configure the local IIS web serve

  - by webnoob

  Hi All, I have been trying to set up local debugging for my ASP.NET app in Delphi and am getting the error above. I have used the aspnet_regiis.exe tool with the following: Aspnet_regiis.exe -s W3SVC/1/ROOT/DevTest but this hasn't helped. It added it to IIS as an application but I am still getting the error: The project cannot be debugged because virtual directory "DevTes" is not configured with ASP.NET version 2.0 or 3.0 Use aspnet_regiis.exe to configure the local IIS web server. I am not really sure where to go from here so need some help please: Machine specs: Windows 7 64bit, IIS7, Using RAD Studio 2007.

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