1*dcdfe824SRobert Mustacchi /* 2*dcdfe824SRobert Mustacchi * This file and its contents are supplied under the terms of the 3*dcdfe824SRobert Mustacchi * Common Development and Distribution License ("CDDL"), version 1.0. 4*dcdfe824SRobert Mustacchi * You may only use this file in accordance with the terms of version 5*dcdfe824SRobert Mustacchi * 1.0 of the CDDL. 6*dcdfe824SRobert Mustacchi * 7*dcdfe824SRobert Mustacchi * A full copy of the text of the CDDL should have accompanied this 8*dcdfe824SRobert Mustacchi * source. A copy of the CDDL is also available via the Internet at 9*dcdfe824SRobert Mustacchi * http://www.illumos.org/license/CDDL. 10*dcdfe824SRobert Mustacchi */ 11*dcdfe824SRobert Mustacchi 12*dcdfe824SRobert Mustacchi /* 13*dcdfe824SRobert Mustacchi * Copyright 2016 Joyent, Inc. 14*dcdfe824SRobert Mustacchi */ 15*dcdfe824SRobert Mustacchi 16*dcdfe824SRobert Mustacchi /* 17*dcdfe824SRobert Mustacchi * Test call_once(3C) 18*dcdfe824SRobert Mustacchi */ 19*dcdfe824SRobert Mustacchi 20*dcdfe824SRobert Mustacchi #include <threads.h> 21*dcdfe824SRobert Mustacchi #include <sys/debug.h> 22*dcdfe824SRobert Mustacchi 23*dcdfe824SRobert Mustacchi #define CO_NTHREADS 32 24*dcdfe824SRobert Mustacchi 25*dcdfe824SRobert Mustacchi static int co_val = 41; 26*dcdfe824SRobert Mustacchi static mtx_t co_once_mtx; 27*dcdfe824SRobert Mustacchi static mtx_t co_mtx; 28*dcdfe824SRobert Mustacchi static boolean_t co_go = B_FALSE; 29*dcdfe824SRobert Mustacchi static once_flag co_once = ONCE_FLAG_INIT; 30*dcdfe824SRobert Mustacchi static cnd_t co_cnd; 31*dcdfe824SRobert Mustacchi 32*dcdfe824SRobert Mustacchi static void 33*dcdfe824SRobert Mustacchi co_once_func(void) 34*dcdfe824SRobert Mustacchi { 35*dcdfe824SRobert Mustacchi VERIFY3S(mtx_lock(&co_once_mtx), ==, thrd_success); 36*dcdfe824SRobert Mustacchi co_val++; 37*dcdfe824SRobert Mustacchi VERIFY3S(mtx_unlock(&co_once_mtx), ==, thrd_success); 38*dcdfe824SRobert Mustacchi } 39*dcdfe824SRobert Mustacchi 40*dcdfe824SRobert Mustacchi /*ARGSUSED*/ 41*dcdfe824SRobert Mustacchi static int 42*dcdfe824SRobert Mustacchi co_thr(void *arg) 43*dcdfe824SRobert Mustacchi { 44*dcdfe824SRobert Mustacchi VERIFY3S(mtx_lock(&co_mtx), ==, thrd_success); 45*dcdfe824SRobert Mustacchi while (co_go == B_FALSE) 46*dcdfe824SRobert Mustacchi cnd_wait(&co_cnd, &co_mtx); 47*dcdfe824SRobert Mustacchi VERIFY3S(mtx_unlock(&co_mtx), ==, thrd_success); 48*dcdfe824SRobert Mustacchi call_once(&co_once, co_once_func); 49*dcdfe824SRobert Mustacchi return (0); 50*dcdfe824SRobert Mustacchi } 51*dcdfe824SRobert Mustacchi 52*dcdfe824SRobert Mustacchi int 53*dcdfe824SRobert Mustacchi main(void) 54*dcdfe824SRobert Mustacchi { 55*dcdfe824SRobert Mustacchi int i; 56*dcdfe824SRobert Mustacchi thrd_t threads[CO_NTHREADS]; 57*dcdfe824SRobert Mustacchi 58*dcdfe824SRobert Mustacchi VERIFY3S(mtx_init(&co_once_mtx, mtx_plain), ==, thrd_success); 59*dcdfe824SRobert Mustacchi VERIFY3S(mtx_init(&co_mtx, mtx_plain), ==, thrd_success); 60*dcdfe824SRobert Mustacchi VERIFY3S(cnd_init(&co_cnd), ==, thrd_success); 61*dcdfe824SRobert Mustacchi 62*dcdfe824SRobert Mustacchi for (i = 0; i < CO_NTHREADS; i++) { 63*dcdfe824SRobert Mustacchi VERIFY3S(thrd_create(&threads[i], co_thr, NULL), ==, 64*dcdfe824SRobert Mustacchi thrd_success); 65*dcdfe824SRobert Mustacchi } 66*dcdfe824SRobert Mustacchi 67*dcdfe824SRobert Mustacchi VERIFY3S(mtx_lock(&co_mtx), ==, thrd_success); 68*dcdfe824SRobert Mustacchi co_go = B_TRUE; 69*dcdfe824SRobert Mustacchi VERIFY3S(mtx_unlock(&co_mtx), ==, thrd_success); 70*dcdfe824SRobert Mustacchi VERIFY3S(cnd_broadcast(&co_cnd), ==, thrd_success); 71*dcdfe824SRobert Mustacchi 72*dcdfe824SRobert Mustacchi for (i = 0; i < CO_NTHREADS; i++) { 73*dcdfe824SRobert Mustacchi VERIFY3S(thrd_join(threads[i], NULL), ==, thrd_success); 74*dcdfe824SRobert Mustacchi } 75*dcdfe824SRobert Mustacchi VERIFY3S(co_val, ==, 42); 76*dcdfe824SRobert Mustacchi 77*dcdfe824SRobert Mustacchi return (0); 78*dcdfe824SRobert Mustacchi } 79