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// Copyright 2019 The TCMalloc 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.
//
// Provides skeleton RSEQ functions which raise a hard error in the case of
// being erroneously called on an unsupported platform.
#include "tcmalloc/internal/logging.h"
#include "tcmalloc/internal/percpu.h"
#if !TCMALLOC_PERCPU_RSEQ_SUPPORTED_PLATFORM
GOOGLE_MALLOC_SECTION_BEGIN
namespace tcmalloc {
namespace tcmalloc_internal {
namespace subtle {
namespace percpu {
static void Unsupported() {
Crash(kCrash, __FILE__, __LINE__,
"RSEQ function called on unsupported platform.");
}
int TcmallocSlab_Internal_PerCpuCmpxchg64(int target_cpu, intptr_t *p,
intptr_t old_val, intptr_t new_val) {
Unsupported();
return -1;
}
int TcmallocSlab_Internal_Push(void *ptr, size_t cl, void *item, size_t shift,
OverflowHandler f) {
Unsupported();
return -1;
}
int TcmallocSlab_Internal_Push_FixedShift(void *ptr, size_t cl, void *item,
OverflowHandler f) {
Unsupported();
return -1;
}
void *TcmallocSlab_Internal_Pop(void *ptr, size_t cl, UnderflowHandler f,
size_t shift) {
Unsupported();
return nullptr;
}
void *TcmallocSlab_Internal_Pop_FixedShift(void *ptr, size_t cl,
UnderflowHandler f) {
Unsupported();
return nullptr;
}
size_t TcmallocSlab_Internal_PushBatch_FixedShift(void *ptr, size_t cl,
void **batch, size_t len) {
Unsupported();
return 0;
}
size_t TcmallocSlab_Internal_PopBatch_FixedShift(void *ptr, size_t cl,
void **batch, size_t len) {
Unsupported();
return 0;
}
int PerCpuReadCycleCounter(int64_t *cycles) {
Unsupported();
return -1;
}
} // namespace percpu
} // namespace subtle
} // namespace tcmalloc_internal
} // namespace tcmalloc
GOOGLE_MALLOC_SECTION_END
#endif // !TCMALLOC_PERCPU_RSEQ_SUPPORTED_PLATFORM
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