116 lines
1.6 KiB
C
116 lines
1.6 KiB
C
#include <u.h>
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#include <libc.h>
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int32_t nprocs = 32;
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int32_t nloops = 10000;
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int32_t x = 1;
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int32_t incr;
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void
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tsemloop(void)
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{
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int i;
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i = 0;
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while(i < nloops){
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if(tsemacquire(&x, 10)){
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if((i % 1000) == 0)
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sleep(10);
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incr++;
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i++;
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semrelease(&x, 1);
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} else {
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//print("pid %d timeout\n", getpid());
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}
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}
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exits("PASS");
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}
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void
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semloop(void)
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{
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int i;
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i = 0;
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while(i < nloops){
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if(semacquire(&x, 1)){
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incr++;
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i++;
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semrelease(&x, 1);
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} else {
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sysfatal("semacquire failed");
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}
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}
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}
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void
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main(void)
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{
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int i;
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incr = 0;
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for(i = 0; i < nprocs; i++){
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switch(rfork(RFMEM|RFPROC)){
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case -1:
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sysfatal("rfork");
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case 0:
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tsemloop();
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exits("PASS");
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default:
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break;
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}
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}
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for(i = 0; i < nprocs; i++)
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waitpid();
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print("tsemloop incr %d\n", incr);
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if(incr != nprocs*nloops){
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print("FAIL\n");
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exits("FAIL");
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}
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incr = 0;
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for(i = 0; i < nprocs; i++){
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switch(rfork(RFMEM|RFPROC)){
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case -1:
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sysfatal("rfork");
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case 0:
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semloop();
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exits("PASS");
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default:
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break;
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}
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}
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for(i = 0; i < nprocs; i++)
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waitpid();
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print("semloop incr %d\n", incr);
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if(incr != nprocs*nloops){
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print("FAIL\n");
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exits("FAIL");
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}
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incr = 0;
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for(i = 0; i < nprocs; i++){
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switch(rfork(RFMEM|RFPROC)){
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case -1:
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sysfatal("rfork");
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case 0:
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if((i&1) == 0)
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semloop();
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else
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tsemloop();
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exits("PASS");
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default:
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break;
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}
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}
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for(i = 0; i < nprocs; i++)
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waitpid();
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print("mixed incr %d\n", incr);
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if(incr != nprocs*nloops){
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print("FAIL\n");
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exits("FAIL");
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}
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print("PASS\n");
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exits("PASS");
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}
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