mirror of
https://github.com/clearlinux/graphene.git
synced 2026-09-06 22:01:29 +00:00
Chia-Che Tsai
7f19f62f31
Plenty of bugfixes for Linux kernel later than 3.5 and Ubuntu later than 10.10. More organized code to improve portability. Regression tests for Pal to test completeness of implementation.
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */
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/* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */
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/* This Hello World demostrate a simple multithread program */
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#include "pal.h"
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#include "pal_debug.h"
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void * private1 = "Hello World 1";
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void * private2 = "Hello World 2";
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static volatile int count1 = 0;
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int callback1 (void * args)
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{
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pal_printf("Run in Child Thread: %s\n", args);
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while (count1 < 10) {
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while (!(count1 % 2))
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DkThreadYieldExecution();
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count1++;
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asm volatile("nop" ::: "memory");
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}
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pal_printf("Threads Run in Parallel OK\n");
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DkSegmentRegister(PAL_SEGMENT_FS, &private2);
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const char * ptr2;
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asm volatile("mov %%fs:0, %0" : "=r"(ptr2) :: "memory");
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pal_printf("Private Message (FS Segment) 2: %s\n", ptr2);
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count1 = 100;
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asm volatile("nop" ::: "memory");
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DkThreadExit();
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count1 = 101;
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asm volatile("nop" ::: "memory");
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return 0;
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}
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int main (int argc, const char ** argv, const char ** envp)
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{
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DkSegmentRegister(PAL_SEGMENT_FS, &private1);
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const char * ptr1;
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asm volatile("mov %%fs:0, %0" : "=r"(ptr1) :: "memory");
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pal_printf("Private Message (FS Segment) 1: %s\n", ptr1);
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PAL_HANDLE thread1 = DkThreadCreate(callback1, "Hello World", 0);
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if (thread1) {
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pal_printf("Child Thread Created\n");
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while (count1 < 10) {
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while (!!(count1 % 2))
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DkThreadYieldExecution();
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count1++;
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asm volatile("nop" ::: "memory");
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}
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while (count1 < 100)
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DkThreadYieldExecution();
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for (int i = 0 ; i < 300 ; i++)
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DkThreadYieldExecution();
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if (count1 == 100)
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pal_printf("Child Thread Exited\n");
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}
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return 0;
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}
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