178 lines
5.0 KiB
C
178 lines
5.0 KiB
C
/*
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Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef NDB_THREAD_H
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#define NDB_THREAD_H
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#include <ndb_global.h>
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#include <my_thread_local.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define UNDEFINED_PROCESSOR_SET 0xFFFF
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typedef enum NDB_THREAD_PRIO_ENUM {
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NDB_THREAD_PRIO_HIGHEST,
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NDB_THREAD_PRIO_HIGH,
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NDB_THREAD_PRIO_MEAN,
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NDB_THREAD_PRIO_LOW,
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NDB_THREAD_PRIO_LOWEST
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} NDB_THREAD_PRIO;
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typedef enum NDB_THREAD_TLS_ENUM {
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NDB_THREAD_TLS_JAM, /* Jam buffer pointer. */
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NDB_THREAD_TLS_THREAD, /* Thread self pointer. */
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NDB_THREAD_TLS_NDB_THREAD, /* NDB thread pointer */
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NDB_THREAD_TLS_MAX
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} NDB_THREAD_TLS;
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typedef void* (NDB_THREAD_FUNC)(void*);
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typedef void* NDB_THREAD_ARG;
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typedef size_t NDB_THREAD_STACKSIZE;
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struct NdbThread;
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/*
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Method to block/unblock thread from receiving KILL signal with
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signum set in g_ndb_shm_signum in a portable manner.
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*/
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#ifdef NDB_SHM_TRANSPORTER
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void NdbThread_set_shm_sigmask(my_bool block);
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#endif
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/**
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* Create a thread
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*
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* * p_thread_func: pointer of the function to run in the thread
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* * p_thread_arg: pointer to argument to be passed to the thread
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* * thread_stack_size: stack size for this thread, 0 => default size
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* * p_thread_name: pointer to name of this thread
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* * returnvalue: pointer to the created thread
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*/
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struct NdbThread* NdbThread_Create(NDB_THREAD_FUNC *p_thread_func,
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NDB_THREAD_ARG *p_thread_arg,
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const NDB_THREAD_STACKSIZE thread_stack_size,
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const char* p_thread_name,
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NDB_THREAD_PRIO thread_prio);
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/**
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* Create a thread-object for "main" that can be used with
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* other NdbThread_*-functions
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*/
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struct NdbThread* NdbThread_CreateObject(const char * name);
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/**
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* Destroy a thread
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* Deallocates memory for thread
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* And NULL the pointer
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*
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*/
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void NdbThread_Destroy(struct NdbThread** p_thread);
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/**
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* Waitfor a thread, suspend the execution of the calling thread
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* until the wait_thread_id completes
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*
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* * p_wait_thread, pointer to the thread to wait for
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* * status: exit code from thread waited for
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* * returnvalue: true = succeded, false = failed
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*/
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int NdbThread_WaitFor(struct NdbThread* p_wait_thread, void** status);
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/**
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* Exit thread, terminates the calling thread
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*
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* * status: exit code
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*/
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void NdbThread_Exit(void *status);
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/**
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* Set thread concurrency level
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*
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* *
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*/
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int NdbThread_SetConcurrencyLevel(int level);
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/**
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* Get "Tid" for thread
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* should only be used for printing etc...
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* return -1, if not supported on platform
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*/
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int NdbThread_GetTid(struct NdbThread*);
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/**
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* Yield to normal time-share prio and back to real-time prio for
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* real-time threads
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*/
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int NdbThread_yield_rt(struct NdbThread*, my_bool high_prio);
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/**
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* Set Scheduler for thread
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*/
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int NdbThread_SetScheduler(struct NdbThread*, my_bool rt_prio, my_bool high_prio);
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/**
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* Lock/Unlock Thread to CPU
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*/
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struct NdbCpuSet;
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struct processor_set_handler;
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int NdbThread_LockCreateCPUSet(const Uint32 *cpu_ids,
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Uint32 num_cpus,
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struct NdbCpuSet **cpu_set);
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void NdbThread_LockDestroyCPUSet(struct NdbCpuSet *cpu_set);
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int NdbThread_LockCPUSet(struct NdbThread*,
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struct NdbCpuSet *cpu_set,
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const struct processor_set_handler *cpu_set_key);
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int NdbThread_LockCPU(struct NdbThread*,
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Uint32 cpu,
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const struct processor_set_handler *cpu_set_key);
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int NdbThread_UnlockCPU(struct NdbThread*);
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const struct processor_set_handler*
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NdbThread_LockGetCPUSetKey(struct NdbThread*);
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/**
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* Fetch and set thread-local storage entry.
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*/
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void *NdbThread_GetTlsKey(NDB_THREAD_TLS key);
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void NdbThread_SetTlsKey(NDB_THREAD_TLS key, void *value);
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/* Get my own NdbThread pointer */
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struct NdbThread *NdbThread_GetNdbThread();
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/**
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* Set properties for NDB_THREAD_PRIO_HIGH
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*
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* NOTE 1: should be set *prior* to starting thread
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* NOTE 2: if these properties *can* be applied is not checked
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* if they can not, then it will be silently ignored
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*
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* @param spec <fifo | rr>[,<prio>]
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*
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* @return 0 - parse ok
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* return -1 - Invalid spec
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*/
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int NdbThread_SetHighPrioProperties(const char * spec);
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#ifdef __cplusplus
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}
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#endif
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#endif
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