Ryan VanderMeulen
807c6f801c
Also add absl/strings/internal/utf8.cc to the sandbox source lists; the newer str_format wide-char path references WideToUtf8. Differential Revision: https://phabricator.services.mozilla.com/D309452
64 lines
1.8 KiB
PHP
64 lines
1.8 KiB
PHP
// Copyright 2020 The Abseil Authors.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// https://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include <cxxabi.h>
|
|
#include <emscripten.h>
|
|
|
|
#include <algorithm>
|
|
#include <cstring>
|
|
|
|
#include "absl/base/internal/raw_logging.h"
|
|
#include "absl/debugging/internal/demangle.h"
|
|
#include "absl/strings/numbers.h"
|
|
#include "absl/strings/str_cat.h"
|
|
#include "absl/strings/string_view.h"
|
|
|
|
extern "C" {
|
|
const char* emscripten_pc_get_function(const void* pc);
|
|
void* emscripten_stack_snapshot();
|
|
}
|
|
|
|
namespace absl {
|
|
ABSL_NAMESPACE_BEGIN
|
|
|
|
void InitializeSymbolizer(const char*) {}
|
|
|
|
bool Symbolize(const void* pc, char* out, int out_size) {
|
|
if (pc == nullptr || out_size <= 0) {
|
|
return false;
|
|
}
|
|
// Need to capture a snapshot first.
|
|
emscripten_stack_snapshot();
|
|
const char* func_name = emscripten_pc_get_function(pc);
|
|
if (func_name == nullptr) {
|
|
return false;
|
|
}
|
|
|
|
strncpy(out, func_name, static_cast<size_t>(out_size));
|
|
|
|
if (out[out_size - 1] != '\0') {
|
|
// strncpy() does not '\0' terminate when it truncates.
|
|
static constexpr char kEllipsis[] = "...";
|
|
size_t ellipsis_size =
|
|
std::min(sizeof(kEllipsis) - 1, static_cast<size_t>(out_size) - 1);
|
|
memcpy(out + out_size - ellipsis_size - 1, kEllipsis, ellipsis_size);
|
|
out[out_size - 1] = '\0';
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
ABSL_NAMESPACE_END
|
|
} // namespace absl
|