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Split up frame dumping/backtracing into two separate functions

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UnknownShadow200 2021-03-16 17:39:57 +11:00
parent f53014c567
commit 4d1f8daa5a
1 changed files with 82 additions and 75 deletions
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157
src/Logger.c
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@ -33,6 +33,8 @@
/* Need this to detect macOS < 10.4, and switch to NS* api instead if so */ /* Need this to detect macOS < 10.4, and switch to NS* api instead if so */
#include <AvailabilityMacros.h> #include <AvailabilityMacros.h>
#endif #endif
/* Only show up to 40 frames in backtrace */
#define MAX_BACKTRACE_FRAMES 40
/*########################################################################################################################* /*########################################################################################################################*
@ -157,7 +159,7 @@ void Logger_SysWarn2(cc_result res, const char* action, const cc_string* path) {
/*########################################################################################################################* /*########################################################################################################################*
*-------------------------------------------------------Backtracing-------------------------------------------------------* *------------------------------------------------------Frame dumping------------------------------------------------------*
*#########################################################################################################################*/ *#########################################################################################################################*/
static void PrintFrame(cc_string* str, cc_uintptr addr, cc_uintptr symAddr, const char* symName, const char* modName) { static void PrintFrame(cc_string* str, cc_uintptr addr, cc_uintptr symAddr, const char* symName, const char* modName) {
cc_string module; cc_string module;
@ -176,11 +178,78 @@ static void PrintFrame(cc_string* str, cc_uintptr addr, cc_uintptr symAddr, cons
} }
} }
#if defined CC_BUILD_WEB
/* No stack frames for web */
#elif defined CC_BUILD_WIN
struct SymbolAndName { IMAGEHLP_SYMBOL symbol; char name[256]; };
static void DumpFrame(HANDLE process, cc_string* trace, cc_uintptr addr) {
char strBuffer[512]; cc_string str;
String_InitArray(str, strBuffer);
struct SymbolAndName s = { 0 };
s.symbol.MaxNameLength = 255;
s.symbol.SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
SymGetSymFromAddr(process, addr, NULL, &s.symbol);
IMAGEHLP_MODULE m = { 0 };
m.SizeOfStruct = sizeof(IMAGEHLP_MODULE);
SymGetModuleInfo(process, addr, &m);
PrintFrame(&str, addr, s.symbol.Address, s.symbol.Name, m.ModuleName);
String_AppendString(trace, &str);
/* This function only works for .pdb debug info */
/* This function is also missing on Windows98 + KernelEX */
#if _MSC_VER
IMAGEHLP_LINE line = { 0 }; DWORD lineOffset;
line.SizeOfStruct = sizeof(IMAGEHLP_LINE);
if (SymGetLineFromAddr(process, addr, &lineOffset, &line)) {
String_Format2(&str, " line %i in %c\r\n", &line.LineNumber, line.FileName);
}
#endif
Logger_Log(&str);
}
#elif defined MAC_OS_X_VERSION_MIN_REQUIRED && (MAC_OS_X_VERSION_MIN_REQUIRED < 1040)
/* dladdr does not exist prior to macOS tiger */
static void DumpFrame(cc_string* trace, void* addr) {
cc_string str; char strBuffer[384];
String_InitArray(str, strBuffer);
/* alas NSModuleForSymbol doesn't work with raw addresses */
PrintFrame(&str, (cc_uintptr)addr, 0, NULL, NULL);
String_AppendString(trace, &str);
Logger_Log(&str);
}
#elif defined CC_BUILD_POSIX
/* need to define __USE_GNU for dladdr */
#ifndef __USE_GNU
#define __USE_GNU
#endif
#include <dlfcn.h>
#undef __USE_GNU
static void DumpFrame(cc_string* trace, void* addr) {
cc_string str; char strBuffer[384];
Dl_info s;
String_InitArray(str, strBuffer);
s.dli_sname = NULL;
s.dli_fname = NULL;
dladdr(addr, &s);
PrintFrame(&str, (cc_uintptr)addr, (cc_uintptr)s.dli_saddr, s.dli_sname, s.dli_fname);
String_AppendString(trace, &str);
Logger_Log(&str);
}
#endif
/*########################################################################################################################*
*-------------------------------------------------------Backtracing-------------------------------------------------------*
*#########################################################################################################################*/
#if defined CC_BUILD_WEB #if defined CC_BUILD_WEB
void Logger_Backtrace(cc_string* trace, void* ctx) { } void Logger_Backtrace(cc_string* trace, void* ctx) { }
#elif defined CC_BUILD_WIN #elif defined CC_BUILD_WIN
struct SymbolAndName { IMAGEHLP_SYMBOL Symbol; char Name[256]; };
static int GetFrames(CONTEXT* ctx, cc_uintptr* addrs, int max) { static int GetFrames(CONTEXT* ctx, cc_uintptr* addrs, int max) {
STACKFRAME frame = { 0 }; STACKFRAME frame = { 0 };
HANDLE process, thread; HANDLE process, thread;
@ -218,81 +287,20 @@ static int GetFrames(CONTEXT* ctx, cc_uintptr* addrs, int max) {
} }
void Logger_Backtrace(cc_string* trace, void* ctx) { void Logger_Backtrace(cc_string* trace, void* ctx) {
char strBuffer[512]; cc_string str; cc_uintptr addrs[MAX_BACKTRACE_FRAMES];
cc_uintptr addrs[40];
int i, frames; int i, frames;
HANDLE process; HANDLE process;
cc_uintptr addr;
process = GetCurrentProcess(); process = GetCurrentProcess();
SymInitialize(process, NULL, TRUE); SymInitialize(process, NULL, TRUE);
frames = GetFrames((CONTEXT*)ctx, addrs, 40); frames = GetFrames((CONTEXT*)ctx, addrs, MAX_BACKTRACE_FRAMES);
for (i = 0; i < frames; i++) { for (i = 0; i < frames; i++) {
addr = addrs[i]; DumpFrame(process, trace, addrs[i]);
String_InitArray(str, strBuffer);
struct SymbolAndName s = { 0 };
s.Symbol.MaxNameLength = 255;
s.Symbol.SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
SymGetSymFromAddr(process, addr, NULL, &s.Symbol);
IMAGEHLP_MODULE m = { 0 };
m.SizeOfStruct = sizeof(IMAGEHLP_MODULE);
SymGetModuleInfo(process, addr, &m);
PrintFrame(&str, addr, s.Symbol.Address, s.Symbol.Name, m.ModuleName);
String_AppendString(trace, &str);
/* This function only works for .pdb debug info */
/* This function is also missing on Windows98 + KernelEX */
#if _MSC_VER
IMAGEHLP_LINE line = { 0 }; DWORD lineOffset;
line.SizeOfStruct = sizeof(IMAGEHLP_LINE);
if (SymGetLineFromAddr(process, addr, &lineOffset, &line)) {
String_Format2(&str, " line %i in %c\r\n", &line.LineNumber, line.FileName);
}
#endif
Logger_Log(&str);
} }
String_AppendConst(trace, _NL); String_AppendConst(trace, _NL);
} }
#elif defined CC_BUILD_POSIX #elif defined CC_BUILD_ANDROID
#ifndef __USE_GNU
/* need to define __USE_GNU for dladdr */
#define __USE_GNU
#endif
#if defined MAC_OS_X_VERSION_MIN_REQUIRED && (MAC_OS_X_VERSION_MIN_REQUIRED < 1040)
static void DumpFrame(cc_string* trace, void* addr) {
cc_string str; char strBuffer[384];
String_InitArray(str, strBuffer);
/* alas NSModuleForSymbol doesn't work with raw addresses */
PrintFrame(&str, (cc_uintptr)addr, 0, NULL, NULL);
String_AppendString(trace, &str);
Logger_Log(&str);
}
#else
#include <dlfcn.h>
#undef __USE_GNU
static void DumpFrame(cc_string* trace, void* addr) {
cc_string str; char strBuffer[384];
Dl_info s;
String_InitArray(str, strBuffer);
s.dli_sname = NULL;
s.dli_fname = NULL;
dladdr(addr, &s);
PrintFrame(&str, (cc_uintptr)addr, (cc_uintptr)s.dli_saddr, s.dli_sname, s.dli_fname);
String_AppendString(trace, &str);
Logger_Log(&str);
}
#endif
#if defined CC_BUILD_ANDROID
/* android's bionic libc doesn't provide backtrace (execinfo.h) */ /* android's bionic libc doesn't provide backtrace (execinfo.h) */
#include <unwind.h> #include <unwind.h>
@ -311,23 +319,23 @@ void Logger_Backtrace(cc_string* trace, void* ctx) {
#elif defined CC_BUILD_DARWIN #elif defined CC_BUILD_DARWIN
/* backtrace is only available on macOS since 10.5 */ /* backtrace is only available on macOS since 10.5 */
void Logger_Backtrace(cc_string* trace, void* ctx) { void Logger_Backtrace(cc_string* trace, void* ctx) {
void* addrs[40]; void* addrs[MAX_BACKTRACE_FRAMES];
unsigned i, frames; unsigned i, frames;
/* See lldb/tools/debugserver/source/MacOSX/stack_logging.h */ /* See lldb/tools/debugserver/source/MacOSX/stack_logging.h */
/* backtrace uses this internally too, and exists since macOS 10.1 */ /* backtrace uses this internally too, and exists since macOS 10.1 */
extern void thread_stack_pcs(void** buffer, unsigned max, unsigned* nb); extern void thread_stack_pcs(void** buffer, unsigned max, unsigned* nb);
thread_stack_pcs(addrs, 40, &frames); thread_stack_pcs(addrs, MAX_BACKTRACE_FRAMES, &frames);
for (i = 1; i < frames; i++) { /* 1 to skip thread_stack_pcs frame */ for (i = 1; i < frames; i++) { /* 1 to skip thread_stack_pcs frame */
DumpFrame(trace, addrs[i]); DumpFrame(trace, addrs[i]);
} }
String_AppendConst(trace, _NL); String_AppendConst(trace, _NL);
} }
#else #elif defined CC_BUILD_POSIX
#include <execinfo.h> #include <execinfo.h>
void Logger_Backtrace(cc_string* trace, void* ctx) { void Logger_Backtrace(cc_string* trace, void* ctx) {
void* addrs[40]; void* addrs[MAX_BACKTRACE_FRAMES];
int i, frames = backtrace(addrs, 40); int i, frames = backtrace(addrs, MAX_BACKTRACE_FRAMES);
for (i = 0; i < frames; i++) { for (i = 0; i < frames; i++) {
DumpFrame(trace, addrs[i]); DumpFrame(trace, addrs[i]);
@ -335,7 +343,6 @@ void Logger_Backtrace(cc_string* trace, void* ctx) {
String_AppendConst(trace, _NL); String_AppendConst(trace, _NL);
} }
#endif #endif
#endif /* CC_BUILD_POSIX */
static void DumpBacktrace(cc_string* str, void* ctx) { static void DumpBacktrace(cc_string* str, void* ctx) {
static const cc_string backtrace = String_FromConst("-- backtrace --" _NL); static const cc_string backtrace = String_FromConst("-- backtrace --" _NL);
Logger_Log(&backtrace); Logger_Log(&backtrace);