x86_64_signal.h

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#ifndef __X86_64_SIGNAL_H__
#define __X86_64_SIGNAL_H__
 
#include <Hal\x86_64_cpu.h>
#include <Hal\x86_64_sched.h>
 
 
 
#pragma pack(push,1)
typedef struct _signal_ {
    int signum;
    x86_64_cpu_regs_t *signalStack;
    AuThreadFrame* signalState;
    uint8_t threadState;
    bool returnSyscall;
}Signal;
#pragma pack(pop)
 
/*
* AuAllocateSignal -- allocate a new signal to the
* destination thread
* @param dest_thread -- destination thread
* @param signum -- signal number
*/
extern void AuAllocateSignal(AuThread* dest_thread, int signum);
 
/*
* AuCheckSignal -- checks for pending signal
* @param curr_thr -- pointer to thread structure
* @param frame -- interrupt stack frame
*/
extern bool AuCheckSignal(AuThread* curr_thr, interrupt_stack_frame *frame);
 
/*
* AuGetSignal -- returns a signal from the queue
* if there is present one
* @param curr_thr -- Pointer to thread structure
*/
extern Signal *AuGetSignal(AuThread* curr_thr);
 
/*
* AuPrepareSignal -- prepare a thread to enter a signal handler
* @param thr -- Pointer to the thread
* @param frame -- interrupt stack frame
* @param signal -- pointer to signal
*/
extern void AuPrepareSignal(AuThread* thr, interrupt_stack_frame* frame, Signal* signal);
 
/*
* AuSendSignal -- send a signal to a specific thread
* @param tid -- thread id
* @param signo -- signal number
*/
extern void AuSendSignal(uint16_t tid, int signo);
 
/*
* AuSignalRemoveAll -- remove all signal forcefully
* @param thr -- thread to look for signals
*/
extern void AuSignalRemoveAll(AuThread* thr);
#endif