medfall

commit 6eb7c01ce5308bdcd7149f02da026d1ecda08b7a
parent 145f518ec3b5e5433ad9b220d3ee3bdc3f2723c6
Author: Michael Savage <mikejsavage@gmail.com>
Date:   Fri May  5 00:21:11 +0300

Re-add platform_backtrace.h. Windows untested

Diffstat:
intrinsics.h
 | 
2
++
platform_backtrace.h
 | 
11
+++++++++++
unix_backtrace.h
 | 
11
+++++++++++
win32_backtrace.h
 | 
35
+++++++++++++++++++++++++++++++++++
4 files changed, 59 insertions(+), 0 deletions(-)
diff --git a/intrinsics.h b/intrinsics.h
@@ -7,6 +7,7 @@
 #include <errno.h>
 
 #include "platform.h"
+#include "platform_backtrace.h"
 
 typedef int8_t s8;
 typedef int16_t s16;
@@ -105,6 +106,7 @@ inline void assert_impl( const bool predicate, const char * message ) {
 		puts( message );
 		int err = errno;
 		printf( "errno(%d): %s\n", err, strerror( err ) );
+		print_backtrace();
 		abort();
 	}
 }
diff --git a/platform_backtrace.h b/platform_backtrace.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "platform.h"
+
+#if PLATFORM_WINDOWS
+#include "win32_backtrace.h"
+#elif PLATFORM_UNIX
+#include "unix_backtrace.h"
+#else
+#error new platform
+#endif
diff --git a/unix_backtrace.h b/unix_backtrace.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include <stdio.h>
+#include <unistd.h>
+#include <execinfo.h>
+
+inline void print_backtrace() {
+	void * stack[ 128 ];
+	const int stack_size = backtrace( stack, 128 );
+	backtrace_symbols_fd( stack, stack_size, STDERR_FILENO );
+}
diff --git a/win32_backtrace.h b/win32_backtrace.h
@@ -0,0 +1,35 @@
+#pragma once
+
+#include <windows.h>
+#include <dbghelp.h>
+
+inline void print_backtrace() {
+	int max_symbol_len = 1024;
+
+	HANDLE process = GetCurrentProcess();
+	SymInitialize( process, NULL, TRUE );
+
+	void * stack[ 128 ];
+	WORD num_frames = CaptureStackBackTrace( 0, 128, stack, NULL );
+
+	for( WORD i = 0; i < num_frames; i++ ) {
+		char symbol_mem[ sizeof( SYMBOL_INFO ) + max_symbol_len * sizeof( TCHAR ) ];
+		SYMBOL_INFO * symbol = ( SYMBOL_INFO * ) symbol_mem;
+		symbol->MaxNameLen = max_symbol_len;
+		symbol->SizeOfStruct = sizeof( SYMBOL_INFO );
+
+		DWORD64 addr64 = DWORD64( stack[ i ] );
+		SymFromAddr( process, addr64, NULL, symbol );
+
+		IMAGEHLP_LINE64 line;
+		line.SizeOfStruct = sizeof( line );
+		BOOL has_file_info = SymGetLineFromAddr64( process, addr64, &col, &line );
+
+		if( has_file_info ) {
+			printf( "%s (%s:%d - 0x%l64x)\n", symbol->Name, line->FileName, line->LineNumber, symbol->Address );
+		}
+		else {
+			printf( "%s (0x%l64x)\n", symbol->Name, symbol->Address );
+		}
+	}
+}