1 // Copyright 2022 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_PROFILER_STACK_BASE_ADDRESS_POSIX_H_ 6 #define BASE_PROFILER_STACK_BASE_ADDRESS_POSIX_H_ 7 8 #include <pthread.h> 9 #include <stdint.h> 10 11 #include <optional> 12 13 #include "base/base_export.h" 14 #include "base/threading/platform_thread.h" 15 16 namespace base { 17 18 // Returns the base address of the stack for the given thread. (The address of 19 // the start of the stack, the highest addressable byte, where the frame of the 20 // first function on the thread is.) 21 // 22 // |id| and |pthread_id| must refer to the same thread. 23 // 24 // On Linux & ChromeOS, if the sandbox has been engaged, this may crash if 25 // |id| and |pthread_id| refer to any thread except the current one. 26 // 27 // May return nullopt on Android if the thread's memory range is not found in 28 // /proc/self/maps. 29 BASE_EXPORT std::optional<uintptr_t> GetThreadStackBaseAddress( 30 PlatformThreadId id, 31 pthread_t pthread_id); 32 33 } // namespace base 34 35 #endif // BASE_PROFILER_STACK_BASE_ADDRESS_POSIX_H_ 36