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add debugging frobs to XP_UNIX platforms. setenv XPCOM_DEBUG_BREAK to make NS_ASSERTION have other behaviors, like dumping the stack to stderr or sending SIGSTOP to the pgrp to allow attaching with gdb for race condition debugging. r=bryner@netscape.com, a=brendan@mozilla.org.

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git-svn-id: svn://10.0.0.236/trunk@76317 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
dmose%mozilla.org
2000-08-14 23:09:39 +00:00
parent 2a0b7d8d70
commit 185aabb68c
2 changed files with 104 additions and 2 deletions
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53
mozilla/xpcom/base/nsDebug.cpp
View File

@@ -50,6 +50,13 @@
#include <stdlib.h>
#endif
#if defined(XP_UNIX) && !defined(UNIX_CRASH_ON_ASSERT)
#include <signal.h>
/* for nsTraceRefcnt::WalkTheStack() */
#include "nsISupportsUtils.h"
#include "nsTraceRefcnt.h"
#endif
#if defined(XP_OS2)
/* Added definitions for DebugBreak() for 2 different OS/2 compilers. Doing
* the int3 on purpose for Visual Age so that a developer can step over the
@@ -258,7 +265,51 @@ NS_COM void nsDebug::Break(const char* aFile, PRIntn aLine)
fprintf(stderr, "Break: at file %s\n",aFile, aLine); fflush(stderr);
#endif
#elif defined(XP_UNIX) && !defined(UNIX_CRASH_ON_ASSERT)
fprintf(stderr, "\07"); fflush(stderr);
fprintf(stderr, "\07");
char *assertBehavior = getenv("XPCOM_DEBUG_BREAK");
if (!assertBehavior) {
// the default; nothing else to do
;
} else if ( strcmp(assertBehavior, "suspend")== 0 ) {
// the suspend case is first because we wanna send the signal before
// other threads have had a chance to get too far from the state that
// caused this assertion (in case they happen to have been involved).
//
fprintf(stderr, "Suspending process; attach with the debugger.\n");
kill(0, SIGSTOP);
} else if ( strcmp(assertBehavior, "warn")==0 ) {
// same as default; nothing else to do (see "suspend" case comment for
// why this compare isn't done as part of the default case)
//
;
} else if ( strcmp(assertBehavior,"stack")==0 ) {
// walk the stack
//
nsTraceRefcnt::WalkTheStack(stderr);
} else if ( strcmp(assertBehavior,"abort")==0 ) {
// same as UNIX_CRASH_ON_ASSERT
//
Abort(aFile, aLine);
} else {
fprintf(stderr, "unrecognized value of XPCOM_DEBUG_BREAK env var!\n");
}
fflush(stderr); // this shouldn't really be necessary, i don't think,
// but maybe there's some lame stdio that buffers stderr
#elif defined(XP_BEOS)
{
#ifdef UNIX_CRASH_ON_ASSERT

53
mozilla/xpcom/glue/nsDebug.cpp
View File

@@ -50,6 +50,13 @@
#include <stdlib.h>
#endif
#if defined(XP_UNIX) && !defined(UNIX_CRASH_ON_ASSERT)
#include <signal.h>
/* for nsTraceRefcnt::WalkTheStack() */
#include "nsISupportsUtils.h"
#include "nsTraceRefcnt.h"
#endif
#if defined(XP_OS2)
/* Added definitions for DebugBreak() for 2 different OS/2 compilers. Doing
* the int3 on purpose for Visual Age so that a developer can step over the
@@ -258,7 +265,51 @@ NS_COM void nsDebug::Break(const char* aFile, PRIntn aLine)
fprintf(stderr, "Break: at file %s\n",aFile, aLine); fflush(stderr);
#endif
#elif defined(XP_UNIX) && !defined(UNIX_CRASH_ON_ASSERT)
fprintf(stderr, "\07"); fflush(stderr);
fprintf(stderr, "\07");
char *assertBehavior = getenv("XPCOM_DEBUG_BREAK");
if (!assertBehavior) {
// the default; nothing else to do
;
} else if ( strcmp(assertBehavior, "suspend")== 0 ) {
// the suspend case is first because we wanna send the signal before
// other threads have had a chance to get too far from the state that
// caused this assertion (in case they happen to have been involved).
//
fprintf(stderr, "Suspending process; attach with the debugger.\n");
kill(0, SIGSTOP);
} else if ( strcmp(assertBehavior, "warn")==0 ) {
// same as default; nothing else to do (see "suspend" case comment for
// why this compare isn't done as part of the default case)
//
;
} else if ( strcmp(assertBehavior,"stack")==0 ) {
// walk the stack
//
nsTraceRefcnt::WalkTheStack(stderr);
} else if ( strcmp(assertBehavior,"abort")==0 ) {
// same as UNIX_CRASH_ON_ASSERT
//
Abort(aFile, aLine);
} else {
fprintf(stderr, "unrecognized value of XPCOM_DEBUG_BREAK env var!\n");
}
fflush(stderr); // this shouldn't really be necessary, i don't think,
// but maybe there's some lame stdio that buffers stderr
#elif defined(XP_BEOS)
{
#ifdef UNIX_CRASH_ON_ASSERT