244 lines
7.7 KiB
C
244 lines
7.7 KiB
C
/***************************************************************************************************
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Zyan Core Library (Zycore-C)
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Original Author : Florian Bernd
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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***************************************************************************************************/
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#include <Zycore/API/Thread.h>
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#ifndef ZYAN_NO_LIBC
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/* ============================================================================================== */
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/* Internal functions */
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/* ============================================================================================== */
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/* ---------------------------------------------------------------------------------------------- */
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/* Legacy Windows import declarations */
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/* ---------------------------------------------------------------------------------------------- */
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#if defined(ZYAN_WINDOWS) && defined(_WIN32_WINNT) && \
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(_WIN32_WINNT >= 0x0501) && (_WIN32_WINNT < 0x0600)
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/**
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* The Windows SDK conditionally declares the following prototypes: the target OS must be Vista
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* (0x0600) or above. MSDN states the same incorrect minimum requirement for the Fls* functions.
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*
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* However, these functions exist and work perfectly fine on XP (SP3) and Server 2003.
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* Preserve backward compatibility with these OSes by declaring the prototypes here if needed.
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*/
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#ifndef FLS_OUT_OF_INDEXES
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#define FLS_OUT_OF_INDEXES ((DWORD)0xFFFFFFFF)
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#endif
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WINBASEAPI
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DWORD
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WINAPI
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FlsAlloc(
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_In_opt_ PFLS_CALLBACK_FUNCTION lpCallback
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);
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WINBASEAPI
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PVOID
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WINAPI
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FlsGetValue(
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_In_ DWORD dwFlsIndex
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);
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WINBASEAPI
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BOOL
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WINAPI
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FlsSetValue(
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_In_ DWORD dwFlsIndex,
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_In_opt_ PVOID lpFlsData
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);
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WINBASEAPI
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BOOL
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WINAPI
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FlsFree(
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_In_ DWORD dwFlsIndex
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);
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#endif /* (_WIN32_WINNT >= 0x0501) && (_WIN32_WINNT < 0x0600)*/
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/* ---------------------------------------------------------------------------------------------- */
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/* ============================================================================================== */
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/* Exported functions */
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/* ============================================================================================== */
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#if defined(ZYAN_POSIX)
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#include <errno.h>
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/* ---------------------------------------------------------------------------------------------- */
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/* General */
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/* ---------------------------------------------------------------------------------------------- */
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ZyanStatus ZyanThreadGetCurrentThread(ZyanThread* thread)
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{
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*thread = pthread_self();
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return ZYAN_STATUS_SUCCESS;
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}
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ZYAN_STATIC_ASSERT(sizeof(ZyanThreadId) <= sizeof(ZyanU64));
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ZyanStatus ZyanThreadGetCurrentThreadId(ZyanThreadId* thread_id)
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{
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// TODO: Use `pthread_getthreadid_np` on platforms where it is available
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pthread_t ptid = pthread_self();
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*thread_id = *(ZyanThreadId*)ptid;
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return ZYAN_STATUS_SUCCESS;
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}
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/* ---------------------------------------------------------------------------------------------- */
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/* Thread Local Storage */
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/* ---------------------------------------------------------------------------------------------- */
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ZyanStatus ZyanThreadTlsAlloc(ZyanThreadTlsIndex* index, ZyanThreadTlsCallback destructor)
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{
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ZyanThreadTlsIndex value;
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const int error = pthread_key_create(&value, destructor);
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if (error != 0)
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{
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if (error == EAGAIN)
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{
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return ZYAN_STATUS_OUT_OF_RESOURCES;
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}
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if (error == ENOMEM)
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{
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return ZYAN_STATUS_NOT_ENOUGH_MEMORY;
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}
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return ZYAN_STATUS_BAD_SYSTEMCALL;
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}
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*index = value;
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return ZYAN_STATUS_SUCCESS;
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}
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ZyanStatus ZyanThreadTlsFree(ZyanThreadTlsIndex index)
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{
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return !pthread_key_delete(index) ? ZYAN_STATUS_SUCCESS : ZYAN_STATUS_BAD_SYSTEMCALL;
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}
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ZyanStatus ZyanThreadTlsGetValue(ZyanThreadTlsIndex index, void** data)
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{
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*data = pthread_getspecific(index);
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return ZYAN_STATUS_SUCCESS;
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}
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ZyanStatus ZyanThreadTlsSetValue(ZyanThreadTlsIndex index, void* data)
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{
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const int error = pthread_setspecific(index, data);
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if (error != 0)
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{
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if (error == EINVAL)
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{
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return ZYAN_STATUS_INVALID_ARGUMENT;
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}
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return ZYAN_STATUS_BAD_SYSTEMCALL;
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}
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return ZYAN_STATUS_SUCCESS;
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}
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/* ---------------------------------------------------------------------------------------------- */
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#elif defined(ZYAN_WINDOWS)
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/* ---------------------------------------------------------------------------------------------- */
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/* General */
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/* ---------------------------------------------------------------------------------------------- */
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ZyanStatus ZyanThreadGetCurrentThread(ZyanThread* thread)
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{
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*thread = GetCurrentThread();
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return ZYAN_STATUS_SUCCESS;
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}
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ZyanStatus ZyanThreadGetCurrentThreadId(ZyanThreadId* thread_id)
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{
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*thread_id = GetCurrentThreadId();
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return ZYAN_STATUS_SUCCESS;
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}
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/* ---------------------------------------------------------------------------------------------- */
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/* Thread Local Storage (TLS) */
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/* ---------------------------------------------------------------------------------------------- */
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ZyanStatus ZyanThreadTlsAlloc(ZyanThreadTlsIndex* index, ZyanThreadTlsCallback destructor)
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{
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const ZyanThreadTlsIndex value = FlsAlloc(destructor);
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if (value == FLS_OUT_OF_INDEXES)
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{
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return ZYAN_STATUS_OUT_OF_RESOURCES;
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}
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*index = value;
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return ZYAN_STATUS_SUCCESS;
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}
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ZyanStatus ZyanThreadTlsFree(ZyanThreadTlsIndex index)
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{
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return FlsFree(index) ? ZYAN_STATUS_SUCCESS : ZYAN_STATUS_BAD_SYSTEMCALL;
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}
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ZyanStatus ZyanThreadTlsGetValue(ZyanThreadTlsIndex index, void** data)
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{
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*data = FlsGetValue(index);
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return ZYAN_STATUS_SUCCESS;
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}
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ZyanStatus ZyanThreadTlsSetValue(ZyanThreadTlsIndex index, void* data)
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{
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if (!FlsSetValue(index, data))
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{
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const DWORD error = GetLastError();
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if (error == ERROR_INVALID_PARAMETER)
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{
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return ZYAN_STATUS_INVALID_ARGUMENT;
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}
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return ZYAN_STATUS_BAD_SYSTEMCALL;
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}
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return ZYAN_STATUS_SUCCESS;
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}
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/* ---------------------------------------------------------------------------------------------- */
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#else
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# error "Unsupported platform detected"
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#endif
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/* ============================================================================================== */
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#endif /* ZYAN_NO_LIBC */
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