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Enhance wasm loading with LoadArgs and support module names
- a new API, wasm_runtime_load_ex(). - in perf.map, function names include user specified module name - enhance the script to help flamegraph generations
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| /* | ||
| * Copyright (C) 2019 Intel Corporation. All rights reserved. | ||
| * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||
| */ | ||
|
|
||
| #include "aot_perf_map.h" | ||
| #include "bh_log.h" | ||
| #include "bh_platform.h" | ||
|
|
||
| #if WASM_ENABLE_LINUX_PERF != 0 | ||
| struct func_info { | ||
| uint32 idx; | ||
| void *ptr; | ||
| }; | ||
|
|
||
| static uint32 | ||
| get_func_size(const AOTModule *module, struct func_info *sorted_func_ptrs, | ||
| uint32 idx) | ||
| { | ||
| uint32 func_sz; | ||
|
|
||
| if (idx == module->func_count - 1) | ||
| func_sz = (uintptr_t)module->code + module->code_size | ||
| - (uintptr_t)(sorted_func_ptrs[idx].ptr); | ||
| else | ||
| func_sz = (uintptr_t)(sorted_func_ptrs[idx + 1].ptr) | ||
| - (uintptr_t)(sorted_func_ptrs[idx].ptr); | ||
|
|
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| return func_sz; | ||
| } | ||
|
|
||
| static int | ||
| compare_func_ptrs(const void *f1, const void *f2) | ||
| { | ||
| return (intptr_t)((struct func_info *)f1)->ptr | ||
| - (intptr_t)((struct func_info *)f2)->ptr; | ||
| } | ||
|
|
||
| static struct func_info * | ||
| sort_func_ptrs(const AOTModule *module, char *error_buf, uint32 error_buf_size) | ||
| { | ||
| uint64 content_len; | ||
| struct func_info *sorted_func_ptrs; | ||
| unsigned i; | ||
|
|
||
| content_len = (uint64)sizeof(struct func_info) * module->func_count; | ||
| sorted_func_ptrs = wasm_runtime_malloc(content_len); | ||
| if (!sorted_func_ptrs) { | ||
| snprintf(error_buf, error_buf_size, | ||
| "allocate memory failed when creating perf map"); | ||
| return NULL; | ||
| } | ||
|
|
||
| for (i = 0; i < module->func_count; i++) { | ||
| sorted_func_ptrs[i].idx = i; | ||
| sorted_func_ptrs[i].ptr = module->func_ptrs[i]; | ||
| } | ||
|
|
||
| qsort(sorted_func_ptrs, module->func_count, sizeof(struct func_info), | ||
| compare_func_ptrs); | ||
|
|
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| return sorted_func_ptrs; | ||
| } | ||
|
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||
| bool | ||
| aot_create_perf_map(const AOTModule *module, char *error_buf, | ||
| uint32 error_buf_size) | ||
| { | ||
| struct func_info *sorted_func_ptrs = NULL; | ||
| char perf_map_path[64] = { 0 }; | ||
| char perf_map_info[128] = { 0 }; | ||
| FILE *perf_map = NULL; | ||
| uint32 i; | ||
| pid_t pid = getpid(); | ||
| bool ret = false; | ||
|
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| sorted_func_ptrs = sort_func_ptrs(module, error_buf, error_buf_size); | ||
| if (!sorted_func_ptrs) | ||
| goto quit; | ||
|
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| snprintf(perf_map_path, sizeof(perf_map_path) - 1, "/tmp/perf-%d.map", pid); | ||
| perf_map = fopen(perf_map_path, "a"); | ||
| if (!perf_map) { | ||
| LOG_WARNING("warning: can't create /tmp/perf-%d.map, because %s", pid, | ||
| strerror(errno)); | ||
| goto quit; | ||
| } | ||
|
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||
| const char *module_name = aot_get_module_name((AOTModule *)module); | ||
| for (i = 0; i < module->func_count; i++) { | ||
| memset(perf_map_info, 0, 128); | ||
| if (strlen(module_name) > 0) | ||
| snprintf(perf_map_info, 128, "%lx %x [%s]#aot_func#%u\n", | ||
| (uintptr_t)sorted_func_ptrs[i].ptr, | ||
| get_func_size(module, sorted_func_ptrs, i), module_name, | ||
| sorted_func_ptrs[i].idx); | ||
| else | ||
| snprintf(perf_map_info, 128, "%lx %x aot_func#%u\n", | ||
| (uintptr_t)sorted_func_ptrs[i].ptr, | ||
| get_func_size(module, sorted_func_ptrs, i), | ||
| sorted_func_ptrs[i].idx); | ||
|
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||
| /* fwrite() is thread safe */ | ||
| fwrite(perf_map_info, 1, strlen(perf_map_info), perf_map); | ||
| } | ||
|
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| LOG_VERBOSE("write map information from %s into /tmp/perf-%d.map", | ||
| module_name, pid); | ||
| ret = true; | ||
|
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| quit: | ||
| if (sorted_func_ptrs) | ||
| wasm_runtime_free(sorted_func_ptrs); | ||
|
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| if (perf_map) | ||
| fclose(perf_map); | ||
|
|
||
| return ret; | ||
| } | ||
| #endif /* WASM_ENABLE_LINUX_PERF != 0 */ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| /* | ||
| * Copyright (C) 2019 Intel Corporation. All rights reserved. | ||
| * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||
| */ | ||
|
|
||
| #ifndef _AOT_PERF_MAP_H_ | ||
| #define _AOT_PERF_MAP_H_ | ||
|
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| #include "aot_runtime.h" | ||
|
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| bool | ||
| aot_create_perf_map(const AOTModule *module, char *error_buf, | ||
| uint32 error_buf_size); | ||
|
|
||
| #endif /* _AOT_PERF_MAP_H_ */ |
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