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/************************************************************************
The test module for the operating system interface
Auxiliary executable run alongside tsos.exe to test
process switching speed
(c) 1995 Innobase Oy
Created 9/27/1995 Heikki Tuuri
*************************************************************************/
#include "../os0thread.h"
#include "../os0shm.h"
#include "../os0proc.h"
#include "ut0ut.h"
/*********************************************************************
Test for shared memory and process switching through yield. */
void
test2(void)
/*=======*/
{
os_shm_t shm;
ulint tm, oldtm;
ulint* pr_no;
ulint count;
ulint i;
printf("-------------------------------------------\n");
printf("OS-TEST 2. Test of process switching through yield\n");
shm = os_shm_create(1000, "TSOS_SHM");
pr_no = os_shm_map(shm);
count = 0;
printf("Process 2 starts test!\n");
oldtm = ut_clock();
for (i = 0; i < 100000; i++) {
if (*pr_no != 2) {
count++;
*pr_no = 2;
}
os_thread_yield();
}
tm = ut_clock();
printf("Process 2 finishes test: %lu process switches noticed\n",
count);
printf("Wall clock time for test %lu milliseconds\n", tm - oldtm);
os_shm_unmap(shm);
os_shm_free(shm);
}
/************************************************************************
Main test function. */
void
main(void)
/*======*/
{
ulint tm, oldtm;
oldtm = ut_clock();
test2();
tm = ut_clock();
printf("Wall clock time for test %lu milliseconds\n", tm - oldtm);
printf("TESTS COMPLETED SUCCESSFULLY!\n");
os_process_exit(0);
}
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