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issue 323 - OS X exception handler / minidump generator should set exception address correctly for EXC_BAD_ACCESS . r=nealsid at http://breakpad.appspot.com/15002

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git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@350 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
ted.mielczarek 2009-06-12 20:36:53 +00:00
parent c52715f32f
commit 61e88c7ad7
8 changed files with 38 additions and 11 deletions
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19
src/client/mac/handler/exception_handler.cc
View file

@ -296,6 +296,7 @@ bool ExceptionHandler::WriteMinidump(const string &dump_path,
bool ExceptionHandler::WriteMinidumpWithException(int exception_type,
int exception_code,
int exception_subcode,
mach_port_t thread_name) {
bool result = false;
@ -303,6 +304,7 @@ bool ExceptionHandler::WriteMinidumpWithException(int exception_type,
if (directCallback_(callback_context_,
exception_type,
exception_code,
exception_subcode,
thread_name) ) {
if (exception_type && exception_code)
_exit(exception_type);
@ -320,7 +322,8 @@ bool ExceptionHandler::WriteMinidumpWithException(int exception_type,
if (filter_ && !filter_(callback_context_))
return false;
md.SetExceptionInformation(exception_type, exception_code, thread_name);
md.SetExceptionInformation(exception_type, exception_code,
exception_subcode, thread_name);
}
result = md.Write(next_minidump_path_c_);
@ -476,7 +479,7 @@ void *ExceptionHandler::WaitForMessage(void *exception_handler_class) {
// Write out the dump and save the result for later retrieval
self->last_minidump_write_result_ =
self->WriteMinidumpWithException(0, 0, 0);
self->WriteMinidumpWithException(0, 0, 0, 0);
self->UninstallHandler(false);
@ -506,11 +509,15 @@ void *ExceptionHandler::WaitForMessage(void *exception_handler_class) {
gBreakpadAllocator->Unprotect();
#endif
// Generate the minidump with the exception data.
self->WriteMinidumpWithException(receive.exception, receive.code[0],
receive.thread.name);
int subcode = 0;
if (receive.exception == EXC_BAD_ACCESS && receive.code_count > 1)
subcode = receive.code[1];
self->UninstallHandler(true);
// Generate the minidump with the exception data.
self->WriteMinidumpWithException(receive.exception, receive.code[0],
subcode, receive.thread.name);
self->UninstallHandler(true);
#if USE_PROTECTED_ALLOCATIONS
if(gBreakpadAllocator)

3
src/client/mac/handler/exception_handler.h
View file

@ -77,6 +77,7 @@ class ExceptionHandler {
typedef bool (*DirectCallback)( void *context,
int exception_type,
int exception_code,
int exception_subcode,
mach_port_t thread_name);
// Creates a new ExceptionHandler instance to handle writing minidumps.
@ -135,7 +136,7 @@ class ExceptionHandler {
// All minidump writing goes through this one routine
bool WriteMinidumpWithException(int exception_type, int exception_code,
mach_port_t thread_name);
int exception_subcode, mach_port_t thread_name);
// When installed, this static function will be call from a newly created
// pthread with |this| as the argument

2
src/client/mac/handler/exception_handler_test.cc
View file

@ -51,7 +51,7 @@ static void *SleepyFunction(void *) {
}
static void Crasher() {
int *a = NULL;
int *a = (int*)0x42;
fprintf(stdout, "Going to crash...\n");
fprintf(stdout, "A = %d", *a);

7
src/client/mac/handler/minidump_generator.cc
View file

@ -54,6 +54,7 @@ namespace google_breakpad {
MinidumpGenerator::MinidumpGenerator()
: exception_type_(0),
exception_code_(0),
exception_subcode_(0),
exception_thread_(0),
crashing_task_(mach_task_self()),
handler_thread_(mach_thread_self()),
@ -67,6 +68,7 @@ MinidumpGenerator::MinidumpGenerator(mach_port_t crashing_task,
mach_port_t handler_thread)
: exception_type_(0),
exception_code_(0),
exception_subcode_(0),
exception_thread_(0),
crashing_task_(crashing_task),
handler_thread_(handler_thread) {
@ -594,7 +596,10 @@ MinidumpGenerator::WriteExceptionStream(MDRawDirectory *exception_stream) {
if (!WriteContext(state, &exception_ptr->thread_context))
return false;
exception_ptr->exception_record.exception_address = CurrentPCForStack(state);
if (exception_type_ == EXC_BAD_ACCESS)
exception_ptr->exception_record.exception_address = exception_subcode_;
else
exception_ptr->exception_record.exception_address = CurrentPCForStack(state);
return true;
}

5
src/client/mac/handler/minidump_generator.h
View file

@ -102,9 +102,11 @@ class MinidumpGenerator {
bool Write(const char *path);
// Specify some exception information, if applicable
void SetExceptionInformation(int type, int code, mach_port_t thread_name) {
void SetExceptionInformation(int type, int code, int subcode,
mach_port_t thread_name) {
exception_type_ = type;
exception_code_ = code;
exception_subcode_ = subcode;
exception_thread_ = thread_name;
}
@ -150,6 +152,7 @@ class MinidumpGenerator {
// Exception information
int exception_type_;
int exception_code_;
int exception_subcode_;
mach_port_t exception_thread_;
mach_port_t crashing_task_;
mach_port_t handler_thread_;