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Enable dump call stack to a buffer (#1244)

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Enable dump call stack to a buffer, use API
`wasm_runtime_get_call_stack_buf_size` to get the required buffer size
and use API
`wasm_runtime_dump_call_stack_to_buf` to dump call stack to a buffer
This commit is contained in:
Xu Jun
2022-06-25 21:38:43 +08:00
committed by GitHub
parent 53b775aa4b
commit 471cac4719
9 changed files with 327 additions and 46 deletions
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94
core/iwasm/interpreter/wasm_runtime.c
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@ -2485,8 +2485,8 @@ wasm_get_module_inst_mem_consumption(const WASMModuleInstance *module_inst,
|| (WASM_ENABLE_MEMORY_TRACING != 0) */
#if WASM_ENABLE_DUMP_CALL_STACK != 0
void
wasm_interp_dump_call_stack(struct WASMExecEnv *exec_env)
bool
wasm_interp_create_call_stack(struct WASMExecEnv *exec_env)
{
WASMModuleInstance *module_inst =
(WASMModuleInstance *)wasm_exec_env_get_module_inst(exec_env);
@ -2507,12 +2507,12 @@ wasm_interp_dump_call_stack(struct WASMExecEnv *exec_env)
if (!bh_vector_destroy(module_inst->frames)
|| !bh_vector_init(module_inst->frames, n, sizeof(WASMCApiFrame),
false)) {
return;
return false;
}
cur_frame = first_frame;
n = 0;
os_printf("\n");
while (cur_frame) {
WASMCApiFrame frame = { 0 };
WASMFunctionInstance *func_inst = cur_frame->function;
@ -2560,20 +2560,86 @@ wasm_interp_dump_call_stack(struct WASMExecEnv *exec_env)
}
}
/* function name not exported, print number instead */
if (func_name == NULL) {
os_printf("#%02d $f%d \n", n, func_inst - module_inst->functions);
}
else {
os_printf("#%02d %s \n", n, func_name);
}
frame.func_name_wp = func_name;
/* keep print */
bh_vector_append(module_inst->frames, &frame);
if (!bh_vector_append(module_inst->frames, &frame)) {
bh_vector_destroy(module_inst->frames);
return false;
}
cur_frame = cur_frame->prev_frame;
n++;
}
os_printf("\n");
return true;
}
#define PRINT_OR_DUMP() \
do { \
total_len += \
wasm_runtime_dump_line_buf_impl(line_buf, print, &buf, &len); \
if ((!print) && buf && (len == 0)) { \
return total_len; \
} \
} while (0)
uint32
wasm_interp_dump_call_stack(struct WASMExecEnv *exec_env, bool print, char *buf,
uint32 len)
{
WASMModuleInstance *module_inst =
(WASMModuleInstance *)wasm_exec_env_get_module_inst(exec_env);
uint32 n = 0, total_len = 0, total_frames;
/* reserve 256 bytes for line buffer, any line longer than 256 bytes
* will be truncated */
char line_buf[256];
if (!module_inst->frames) {
return 0;
}
total_frames = bh_vector_size(module_inst->frames);
if (total_frames == 0) {
return 0;
}
snprintf(line_buf, sizeof(line_buf), "\n");
PRINT_OR_DUMP();
while (n < total_frames) {
WASMCApiFrame frame = { 0 };
uint32 line_length, i;
if (!bh_vector_get(module_inst->frames, n, &frame)) {
return 0;
}
/* function name not exported, print number instead */
if (frame.func_name_wp == NULL) {
line_length = snprintf(line_buf, sizeof(line_buf), "#%02d $f%d\n",
n, frame.func_index);
}
else {
line_length = snprintf(line_buf, sizeof(line_buf), "#%02d %s\n", n,
frame.func_name_wp);
}
if (line_length >= sizeof(line_buf)) {
uint32 line_buffer_len = sizeof(line_buf);
/* If line too long, ensure the last character is '\n' */
for (i = line_buffer_len - 5; i < line_buffer_len - 2; i++) {
line_buf[i] = '.';
}
line_buf[line_buffer_len - 2] = '\n';
}
PRINT_OR_DUMP();
n++;
}
snprintf(line_buf, sizeof(line_buf), "\n");
PRINT_OR_DUMP();
return total_len + 1;
}
#endif /* end of WASM_ENABLE_DUMP_CALL_STACK */