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b3a68ed095
DirtySDK (EA's Dirty Sockets library) will be used for the LiveAPI implementation, and depends on: EABase, EAThread.
85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Copyright (c) Electronic Arts Inc. All rights reserved.
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///////////////////////////////////////////////////////////////////////////////
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#include <eathread/eathread_callstack.h>
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#include <eathread/eathread_callstack_context.h>
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#include <string.h>
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#include <pthread.h>
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#include <eathread/eathread_storage.h>
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namespace EA
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{
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namespace Thread
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{
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// To do: Remove the usage of sStackBase for the platforms that it's not needed,
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// as can be seen from the logic below. For example Mac OSX probably doesn't need it.
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static EA::Thread::ThreadLocalStorage sStackBase;
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///////////////////////////////////////////////////////////////////////////////
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// SetStackBase
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//
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EATHREADLIB_API void SetStackBase(void* pStackBase)
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{
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if(pStackBase)
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sStackBase.SetValue(pStackBase);
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else
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{
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pStackBase = __builtin_frame_address(0);
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if(pStackBase)
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SetStackBase(pStackBase);
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// Else failure; do nothing.
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// GetStackBase
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//
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EATHREADLIB_API void* GetStackBase()
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{
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#if defined(EA_PLATFORM_UNIX)
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void* pBase;
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if(GetPthreadStackInfo(&pBase, NULL))
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return pBase;
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#endif
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// Else we require the user to have set this previously, usually via a call
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// to SetStackBase() in the start function of this currently executing
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// thread (or main for the main thread).
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return sStackBase.GetValue();
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}
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///////////////////////////////////////////////////////////////////////////////
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// GetStackLimit
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//
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EATHREADLIB_API void* GetStackLimit()
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{
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#if defined(EA_PLATFORM_UNIX)
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void* pLimit;
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if(GetPthreadStackInfo(NULL, &pLimit))
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return pLimit;
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#endif
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// If this fails then we might have an issue where you are using GCC but not
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// using the GCC standard library glibc. Or maybe glibc doesn't support
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// __builtin_frame_address on this platform. Or maybe you aren't using GCC but
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// rather a compiler that masquerades as GCC (common situation).
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void* pStack = __builtin_frame_address(0);
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return (void*)((uintptr_t)pStack & ~4095); // Round down to nearest page, as the stack grows downward.
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}
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} // namespace Thread
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} // namespace EA
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