67 lines
1.2 KiB
C
67 lines
1.2 KiB
C
#include <syscall.h>
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#include <process.h>
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#include <thread.h>
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#include <scheduler.h>
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#include <string.h>
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#include <mem.h>
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#include <debug.h>
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#include <list.h>
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SYSCALL_DEF(fork)
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{
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SYSCALL_INIT();
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// Copy process and memory space
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process_t *p = get_current_process();
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process_t *new = process_spawn(p);
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// Copy thread
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thread_t *th = new_thread(0, 1);
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memcpy(&th->r, &get_current_thread()->r, sizeof(registers_t));
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// Make new thread return 0
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th->r.rax = 0;
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process_attach(new, th);
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scheduler_insert(th);
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// Return new pid
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return new->pid;
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}
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__attribute__((noreturn)) SYSCALL_DEF(exit)
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{
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SYSCALL_INIT(int, status);
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process_t *proc = get_current_process();
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process_exit(proc, status);
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schedule();
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debug_error("PANIC - This line should be unreachable (%s:%d)\n", __FILE__, __LINE__);
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for(;;);
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}
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SYSCALL_DEF(wait)
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{
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SYSCALL_INIT(int *, status);
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process_t *proc = get_current_process();
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int pid = 0;
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while(!pid)
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{
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LIST_FOREACH(proc->children, process_t, p, siblings)
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{
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if(p->state == PROC_STATE_ZOMBIE)
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{
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pid = p->pid;
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*status = p->status;
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// Destroy the process
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process_free(p);
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break;
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}
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}
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schedule();
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}
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return pid;
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}
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