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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/debug/crash_logging.h"
#include <ostream>
#include <string_view>
#include "base/check_op.h"
#include "build/build_config.h"
namespace base::debug {
namespace {
CrashKeyImplementation* g_crash_key_impl = nullptr;
} // namespace
CrashKeyString* AllocateCrashKeyString(const char name[],
CrashKeySize value_length) {
// TODO(crbug.com/40850825): It would be great if the DCHECKs below
// could also be enabled on Android, but debugging tryjob failures was a bit
// difficult... :-/
#if DCHECK_IS_ON() && !BUILDFLAG(IS_ANDROID)
std::string_view name_piece = name;
// Some `CrashKeyImplementation`s reserve certain characters and disallow
// using them in crash key names. See also https://crbug.com/1341077.
DCHECK_EQ(std::string_view::npos, name_piece.find(':'))
<< "; name_piece = " << name_piece;
// Some `CrashKeyImplementation`s support only short crash key names (e.g. see
// the DCHECK in crash_reporter::internal::CrashKeyStringImpl::Set).
// Enforcing this restrictions here ensures that crash keys will work for all
// `CrashKeyStringImpl`s.
DCHECK_LT(name_piece.size(), 40u);
#endif
if (!g_crash_key_impl) {
return nullptr;
}
return g_crash_key_impl->Allocate(name, value_length);
}
void SetCrashKeyString(CrashKeyString* crash_key, std::string_view value) {
if (!g_crash_key_impl || !crash_key) {
return;
}
g_crash_key_impl->Set(crash_key, value);
}
void ClearCrashKeyString(CrashKeyString* crash_key) {
if (!g_crash_key_impl || !crash_key) {
return;
}
g_crash_key_impl->Clear(crash_key);
}
void OutputCrashKeysToStream(std::ostream& out) {
if (!g_crash_key_impl) {
return;
}
g_crash_key_impl->OutputCrashKeysToStream(out);
}
ScopedCrashKeyString::ScopedCrashKeyString(CrashKeyString* crash_key,
std::string_view value)
: crash_key_(crash_key) {
SetCrashKeyString(crash_key_, value);
}
ScopedCrashKeyString::ScopedCrashKeyString(ScopedCrashKeyString&& other)
: crash_key_(std::exchange(other.crash_key_, nullptr)) {}
ScopedCrashKeyString::~ScopedCrashKeyString() {
ClearCrashKeyString(crash_key_);
}
void SetCrashKeyImplementation(std::unique_ptr<CrashKeyImplementation> impl) {
delete g_crash_key_impl;
g_crash_key_impl = impl.release();
}
} // namespace base::debug
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