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65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
// Copyright 2026 Mocktail Project Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef MOCKTAIL_COMPAT_BIONIC_PTHREAD_KEY_RUNTIME_H_
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#define MOCKTAIL_COMPAT_BIONIC_PTHREAD_KEY_RUNTIME_H_
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#include <pthread.h>
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#include <cstddef>
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#include <cstdint>
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namespace mocktail::compat {
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// Android Bionic exposes pthread keys as 0x80000000 | index. Its current
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// public key pool includes two libc-reserved slots and PTHREAD_KEYS_MAX
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// application slots. The implementation mirrors that externally
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// visible ABI without replacing the host process TLS/FS layout.
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constexpr size_t kBionicPthreadKeyCount = 130;
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constexpr uint32_t kBionicPthreadKeyValidFlag = uint32_t{1} << 31;
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using BionicPthreadKeyDestructor = void (*)(void*);
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// Implements Bionic's pthread_key_* ABI for keys registered through the
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// synthetic libc.so. Host code continues to use glibc pthread keys.
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class BionicPthreadKeyRuntime {
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public:
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static BionicPthreadKeyRuntime& Instance() noexcept;
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int Create(pthread_key_t* key, BionicPthreadKeyDestructor destructor) noexcept;
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int Delete(pthread_key_t key) noexcept;
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void* Get(pthread_key_t key) noexcept;
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int Set(pthread_key_t key, const void* value) noexcept;
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private:
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BionicPthreadKeyRuntime() = default;
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};
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bool IsBionicPthreadKey(pthread_key_t key) noexcept;
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} // namespace mocktail::compat
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extern "C" {
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int mocktail_bionic_pthread_key_create(
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pthread_key_t* key, void (*destructor)(void*));
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int mocktail_bionic_pthread_key_delete(pthread_key_t key);
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void* mocktail_bionic_pthread_getspecific(pthread_key_t key);
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int mocktail_bionic_pthread_setspecific(pthread_key_t key,
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const void* value);
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} // extern "C"
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#endif // MOCKTAIL_COMPAT_BIONIC_PTHREAD_KEY_RUNTIME_H_
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