mirror of
https://github.com/MariaDB/server.git
synced 2025-11-04 04:46:15 +01:00
dfa90257f6
handle_slave_io(), handle_slave_sql(), os_thread_exit(): Remove a redundant pthread_exit(nullptr) call, because it would cause SIGSEGV. mysql_print_status(): Add MEM_MAKE_DEFINED() to work around some missing instrumentation around mallinfo2(). que_graph_free_stat_list(): Invoke que_node_get_next(node) before que_graph_free_recursive(node). That is the logical and MSAN_OPTIONS=poison_in_dtor=1 compatible way of freeing memory. ins_node_t::~ins_node_t(): Invoke mem_heap_free(entry_sys_heap). que_graph_free_recursive(): Rely on ins_node_t::~ins_node_t(). fts_t::~fts_t(): Invoke mem_heap_free(fts_heap). fts_free(): Replace with direct calls to fts_t::~fts_t(). The failures in free_root() due to MSAN_OPTIONS=poison_in_dtor=1 will be covered in MDEV-30942.
131 lines
3.5 KiB
C++
131 lines
3.5 KiB
C++
/*****************************************************************************
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Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved.
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Copyright (c) 2017, 2020, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file os/os0thread.cc
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The interface to the operating system thread control primitives
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Created 9/8/1995 Heikki Tuuri
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*******************************************************/
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#include "univ.i"
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#include "srv0srv.h"
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#ifdef _WIN32
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bool os_thread_eq(os_thread_id_t a, os_thread_id_t b) { return a == b; }
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void os_thread_yield() { SwitchToThread(); }
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os_thread_id_t os_thread_get_curr_id() { return GetCurrentThreadId(); }
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#endif
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/****************************************************************//**
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Creates a new thread of execution. The execution starts from
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the function given.
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NOTE: We count the number of threads in os_thread_exit(). A created
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thread should always use that to exit so thatthe thread count will be
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decremented.
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We do not return an error code because if there is one, we crash here. */
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os_thread_t os_thread_create(os_thread_func_t func, void *arg)
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{
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os_thread_id_t new_thread_id;
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#ifdef _WIN32
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HANDLE handle;
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handle = CreateThread(NULL, /* no security attributes */
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0, /* default size stack */
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func,
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arg,
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0, /* thread runs immediately */
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&new_thread_id);
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if (!handle) {
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/* If we cannot start a new thread, life has no meaning. */
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ib::fatal() << "CreateThread returned " << GetLastError();
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}
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CloseHandle(handle);
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return((os_thread_t)new_thread_id);
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#else /* _WIN32 else */
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pthread_attr_t attr;
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int ret = pthread_attr_init(&attr);
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if (UNIV_UNLIKELY(ret)) {
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fprintf(stderr,
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"InnoDB: Error: pthread_attr_init() returned %d\n",
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ret);
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abort();
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}
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ret = pthread_create(&new_thread_id, &attr, func, arg);
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ut_a(ret == 0);
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pthread_attr_destroy(&attr);
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#endif /* not _WIN32 */
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return((os_thread_t)new_thread_id);
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}
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/** Detach and terminate the current thread. */
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os_thread_ret_t os_thread_exit()
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{
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#ifdef UNIV_DEBUG_THREAD_CREATION
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ib::info() << "Thread exits, id " << os_thread_get_curr_id();
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#endif
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#ifdef UNIV_PFS_THREAD
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pfs_delete_thread();
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#endif
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#ifdef _WIN32
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ExitThread(0);
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#else
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pthread_detach(pthread_self());
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#endif
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OS_THREAD_DUMMY_RETURN;
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}
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/*****************************************************************//**
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The thread sleeps at least the time given in microseconds. */
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void
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os_thread_sleep(
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/*============*/
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ulint tm) /*!< in: time in microseconds */
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{
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#ifdef _WIN32
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Sleep((DWORD) tm / 1000);
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#elif defined(HAVE_NANOSLEEP)
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struct timespec t;
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t.tv_sec = tm / 1000000;
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t.tv_nsec = (tm % 1000000) * 1000;
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::nanosleep(&t, NULL);
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#else
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struct timeval t;
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t.tv_sec = tm / 1000000;
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t.tv_usec = tm % 1000000;
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select(0, NULL, NULL, NULL, &t);
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#endif /* _WIN32 */
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}
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