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dqn: Document the stack trace API

This commit is contained in:
doyle 2023-08-31 20:07:27 +10:00
parent 48fc80e24f
commit 7f47df1bbe
1 changed files with 35 additions and 3 deletions
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38
dqn_debug.h
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@ -56,6 +56,38 @@ DQN_API void Dqn_ASAN_PoisonMemoryRegion(void const volatile *ptr, Dqn_usize siz
DQN_API void Dqn_ASAN_UnpoisonMemoryRegion(void const volatile *ptr, Dqn_usize size);
// NOTE: [$STKT] Dqn_StackTrace ====================================================================
// Create a stack trace at the calling site that these functions are invoked
// from.
//
// NOTE: API =======================================================================================
// @proc Dqn_StackTrace_Walk
// @desc This functions generates the stack trace as a series of U64's that
// represent the base address of the functions on the call-stack at the point
// of execution. These functions are stored in order from the current
// executing function first and the most ancestor function last in the walk.
// @proc Dqn_StackTrace_WalkResultIterate
// @desc Create an iterator to iterate the walk result and produce
// `Dqn_StackTraceRawFrame` from each level of the call-stack. These frames
// can then be converted into `Dqn_StackTraceFrame` which is a human readable
// representation of the frame.
#if 0
Dqn_ThreadScratch scratch = Dqn_Thread_GetScratch(nullptr);
Dqn_StackTraceWalkResult walk = Dqn_StackTrace_Walk(scratch.arena, 128 /*limit*/);
for (Dqn_StackTraceWalkResultIterator it = {}; Dqn_StackTrace_WalkResultIterate(&it, &walk); ) {
Dqn_StackTraceFrame frame = Dqn_StackTrace_RawFrameToFrame(scratch.arena, it.raw_frame);
Dqn_Print_LnF("%.*s(%I64u): %.*s", DQN_STRING_FMT(frame.file_name), frame.line_number, DQN_STRING_FMT(frame.function_name));
}
#endif
// @proc Dqn_StackTrace_GetFrames
// @desc Create a stack trace at the point of execution and return the frames
// converted into its human readable format.
// @proc Dqn_StackTrace_RawFrameToFrame
// @desc Convert a raw frame from a stack trace walk into the human readable
// format (e.g. with function names, line number and file name).
struct Dqn_StackTraceFrame
{
uint64_t address;
@ -72,9 +104,9 @@ struct Dqn_StackTraceRawFrame
struct Dqn_StackTraceWalkResult
{
void *process;
uint64_t *base_addr;
uint16_t size;
void *process; // [Internal] Windows handle to the process
uint64_t *base_addr; // The addresses of the functions in the stack trace
uint16_t size; // The number of `base_addr`'s stored from the walk
};
struct Dqn_StackTraceWalkResultIterator