/* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */ /* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */ /* This Hello World demostrate a simple multithread program */ #include "pal.h" #include "pal_debug.h" void * private1 = "Hello World 1"; void * private2 = "Hello World 2"; static volatile int count1 = 0; int callback1 (void * args) { pal_printf("Run in Child Thread: %s\n", (char *) args); while (count1 < 10) { while (!(count1 % 2)) DkThreadYieldExecution(); count1++; __asm__ volatile("nop" ::: "memory"); } pal_printf("Threads Run in Parallel OK\n"); DkSegmentRegister(PAL_SEGMENT_FS, &private2); const char * ptr2; __asm__ volatile("mov %%fs:0, %0" : "=r"(ptr2) :: "memory"); pal_printf("Private Message (FS Segment) 2: %s\n", ptr2); count1 = 100; __asm__ volatile("nop" ::: "memory"); DkThreadExit(); count1 = 101; __asm__ volatile("nop" ::: "memory"); return 0; } int main (int argc, const char ** argv, const char ** envp) { DkSegmentRegister(PAL_SEGMENT_FS, &private1); const char * ptr1; __asm__ volatile("mov %%fs:0, %0" : "=r"(ptr1) :: "memory"); pal_printf("Private Message (FS Segment) 1: %s\n", ptr1); PAL_HANDLE thread1 = DkThreadCreate(callback1, "Hello World"); if (thread1) { pal_printf("Child Thread Created\n"); while (count1 < 10) { while (!!(count1 % 2)) DkThreadYieldExecution(); count1++; __asm__ volatile("nop" ::: "memory"); } while (count1 < 100) DkThreadYieldExecution(); for (int i = 0 ; i < 300 ; i++) DkThreadYieldExecution(); if (count1 == 100) pal_printf("Child Thread Exited\n"); } return 0; }