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Diffstat (limited to 'src/mercury/mercury_thread.h')
| -rw-r--r-- | src/mercury/mercury_thread.h | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/src/mercury/mercury_thread.h b/src/mercury/mercury_thread.h new file mode 100644 index 0000000..cc4bbf1 --- /dev/null +++ b/src/mercury/mercury_thread.h @@ -0,0 +1,242 @@ +/* + * Copyright (C) 2013-2019 Argonne National Laboratory, Department of Energy, + * UChicago Argonne, LLC and The HDF Group. + * All rights reserved. + * + * The full copyright notice, including terms governing use, modification, + * and redistribution, is contained in the COPYING file that can be + * found at the root of the source code distribution tree. + */ + +#ifndef MERCURY_THREAD_H +#define MERCURY_THREAD_H + +#if !defined(_WIN32) && !defined(_GNU_SOURCE) +# define _GNU_SOURCE +#endif +#include "mercury_util_config.h" + +#ifdef _WIN32 +# include <windows.h> +typedef HANDLE hg_thread_t; +typedef LPTHREAD_START_ROUTINE hg_thread_func_t; +typedef DWORD hg_thread_ret_t; +# define HG_THREAD_RETURN_TYPE hg_thread_ret_t WINAPI +typedef DWORD hg_thread_key_t; +typedef DWORD_PTR hg_cpu_set_t; +#else +# include <pthread.h> +typedef pthread_t hg_thread_t; +typedef void *(*hg_thread_func_t)(void *); +typedef void *hg_thread_ret_t; +# define HG_THREAD_RETURN_TYPE hg_thread_ret_t +typedef pthread_key_t hg_thread_key_t; +# ifdef __APPLE__ +/* Size definition for CPU sets. */ +# define HG_CPU_SETSIZE 1024 +# define HG_NCPUBITS (8 * sizeof(hg_cpu_mask_t)) +/* Type for array elements in 'cpu_set_t'. */ +typedef hg_util_uint64_t hg_cpu_mask_t; +typedef struct { + hg_cpu_mask_t bits[HG_CPU_SETSIZE / HG_NCPUBITS]; +} hg_cpu_set_t; +# else +typedef cpu_set_t hg_cpu_set_t; +# endif +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * Initialize the thread. + * + * \param thread [IN/OUT] pointer to thread object + */ +HG_UTIL_PUBLIC void +hg_thread_init(hg_thread_t *thread); + +/** + * Create a new thread for the given function. + * + * \param thread [IN/OUT] pointer to thread object + * \param f [IN] pointer to function + * \param data [IN] pointer to data than be passed to function f + * + * \return Non-negative on success or negative on failure + */ +HG_UTIL_PUBLIC int +hg_thread_create(hg_thread_t *thread, hg_thread_func_t f, void *data); + +/** + * Ends the calling thread. + * + * \param ret [IN] exit code for the thread + * + * \return Non-negative on success or negative on failure + */ +HG_UTIL_PUBLIC void +hg_thread_exit(hg_thread_ret_t ret); + +/** + * Wait for thread completion. + * + * \param thread [IN] thread object + * + * \return Non-negative on success or negative on failure + */ +HG_UTIL_PUBLIC int +hg_thread_join(hg_thread_t thread); + +/** + * Terminate the thread. + * + * \param thread [IN] thread object + * + * \return Non-negative on success or negative on failure + */ +HG_UTIL_PUBLIC int +hg_thread_cancel(hg_thread_t thread); + +/** + * Yield the processor. + * + * \return Non-negative on success or negative on failure + */ +HG_UTIL_PUBLIC int +hg_thread_yield(void); + +/** + * Obtain handle of the calling thread. + * + * \return + */ +static HG_UTIL_INLINE hg_thread_t +hg_thread_self(void); + +/** + * Compare thread IDs. + * + * \return Non-zero if equal, zero if not equal + */ +static HG_UTIL_INLINE int +hg_thread_equal(hg_thread_t t1, hg_thread_t t2); + +/** + * Create a thread-specific data key visible to all threads in the process. + * + * \param key [OUT] pointer to thread key object + * + * \return Non-negative on success or negative on failure + */ +HG_UTIL_PUBLIC int +hg_thread_key_create(hg_thread_key_t *key); + +/** + * Delete a thread-specific data key previously returned by + * hg_thread_key_create(). + * + * \param key [IN] thread key object + * + * \return Non-negative on success or negative on failure + */ +HG_UTIL_PUBLIC int +hg_thread_key_delete(hg_thread_key_t key); + +/** + * Get value from specified key. + * + * \param key [IN] thread key object + * + * \return Pointer to data associated to the key + */ +static HG_UTIL_INLINE void * +hg_thread_getspecific(hg_thread_key_t key); + +/** + * Set value to specified key. + * + * \param key [IN] thread key object + * \param value [IN] pointer to data that will be associated + * + * \return Non-negative on success or negative on failure + */ +static HG_UTIL_INLINE int +hg_thread_setspecific(hg_thread_key_t key, const void *value); + +/** + * Get affinity mask. + * + * \param thread [IN] thread object + * \param cpu_mask [IN/OUT] cpu mask + * + * \return Non-negative on success or negative on failure + */ +HG_UTIL_PUBLIC int +hg_thread_getaffinity(hg_thread_t thread, hg_cpu_set_t *cpu_mask); + +/** + * Set affinity mask. + * + * \param thread [IN] thread object + * \param cpu_mask [IN] cpu mask + * + * \return Non-negative on success or negative on failure + */ +HG_UTIL_PUBLIC int +hg_thread_setaffinity(hg_thread_t thread, const hg_cpu_set_t *cpu_mask); + +/*---------------------------------------------------------------------------*/ +static HG_UTIL_INLINE hg_thread_t +hg_thread_self(void) +{ +#ifdef _WIN32 + return GetCurrentThread(); +#else + return pthread_self(); +#endif +} + +/*---------------------------------------------------------------------------*/ +static HG_UTIL_INLINE int +hg_thread_equal(hg_thread_t t1, hg_thread_t t2) +{ +#ifdef _WIN32 + return GetThreadId(t1) == GetThreadId(t2); +#else + return pthread_equal(t1, t2); +#endif +} + +/*---------------------------------------------------------------------------*/ +static HG_UTIL_INLINE void * +hg_thread_getspecific(hg_thread_key_t key) +{ +#ifdef _WIN32 + return TlsGetValue(key); +#else + return pthread_getspecific(key); +#endif +} + +/*---------------------------------------------------------------------------*/ +static HG_UTIL_INLINE int +hg_thread_setspecific(hg_thread_key_t key, const void *value) +{ +#ifdef _WIN32 + if (!TlsSetValue(key, (LPVOID) value)) + return HG_UTIL_FAIL; +#else + if (pthread_setspecific(key, value)) + return HG_UTIL_FAIL; +#endif + + return HG_UTIL_SUCCESS; +} + +#ifdef __cplusplus +} +#endif + +#endif /* MERCURY_THREAD_H */ |