Ginger88895
/
warzone2100
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Highly experimental GDB dump code. 

Additional to the useless GLibC backtrace also try to attach GDB to the process and dump a backtrace.


git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@1196 4a71c877-e1ca-e34f-864e-861f7616d084
master
Dennis Schridde 2007-03-04 12:05:53 +00:00
parent da62d665ab
commit db53487043
1 changed files with 47 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
lib/framework/exceptionhandler.c
View File

@ -19,8 +19,10 @@
*/
#include "frame.h"
#define MAX_STRING 256
static char * programCommand = NULL;
static char programPID[MAX_STRING] = {'\0'};
#if defined(WZ_OS_WIN)
@ -95,6 +97,7 @@ static LONG WINAPI windowsExceptionHandler(PEXCEPTION_POINTERS pExceptionInfo)
// POSIX headers:
#include <unistd.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <sys/utsname.h>
// GNU header:
@ -151,8 +154,10 @@ static void errorHandler(int sig)
void * btBuffer[MAX_BACKTRACE] = {NULL};
char * gDumpPath = "/tmp/warzone2100.gdmp";
uint32_t btSize = backtrace(btBuffer, MAX_BACKTRACE);
pid_t pid = 0;
int gdbPipe[2] = {0}, dumpFile = open(gDumpPath, O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
int dumpFile = open(gDumpPath, O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR);
if (!dumpFile)
{
@ -215,9 +220,47 @@ static void errorHandler(int sig)
fsync(dumpFile);
close(dumpFile);
printf("Saved dump file to '%s'\n", gDumpPath);
if (pipe(gdbPipe) == 0)
{
pid = fork();
if ( pid == (pid_t)0 )
{
close(gdbPipe[1]); // No output to pipe
dup2(gdbPipe[0], 0); // Input from pipe
dup2(dumpFile, 1); // Output to dumpFile
execlp("gdb", "gdb", programCommand, programPID, NULL);
fsync(dumpFile);
close(dumpFile);
close(gdbPipe[0]);
}
else if (pid > (pid_t)0 )
{
close(dumpFile); // No output to dumpFile
close(gdbPipe[0]); // No input from pipe
write(gdbPipe[1], "backtrace full\n", strlen("backtrace full\n"));
write(gdbPipe[1], "quit\n", strlen("quit\n"));
waitpid(pid, NULL, 0);
close(gdbPipe[1]);
printf("Saved dump file to '%s'\n", gDumpPath);
}
else
{
printf("Fork failed\n");
}
}
else
{
printf("Pipe failed\n");
}
signal(sig, oldHandler[sig]);
raise(sig);
@ -229,6 +272,7 @@ static void errorHandler(int sig)
void setupExceptionHandler(char * programCommand_x)
{
programCommand = programCommand_x;
snprintf( programPID, MAX_STRING, "%i", getpid() );
#if defined(WZ_OS_WIN)
SetUnhandledExceptionFilter(windowsExceptionHandler);