handle.c File Reference

#include <stdbool.h>
#include <stdint.h>
#include <sys/kassert.h>
#include <sys/queue.h>
#include <sys/kmem.h>
#include <sys/handle.h>
#include <sys/thread.h>
#include <sys/syscall.h>

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Functions
void	Handle_GlobalInit ()
	DEFINE_SLAB (Handle, &handleSlab)
void	Handle_Init (Process *proc)
void	Handle_Destroy (Process *proc)
uint64_t	Handle_Add (Process *proc, Handle *handle)
void	Handle_Remove (Process *proc, Handle *handle)
Handle *	Handle_Lookup (Process *proc, uint64_t fd)

Variables
Slab	handleSlab

Function Documentation

DEFINE_SLAB()

DEFINE_SLAB	(	Handle	,
		&	handleSlab
	)

Handle_Add()

uint64_t Handle_Add	(	Process *	proc,
		Handle *	handle
	)

Definition at line 47 of file handle.c.

{
    int slot;
 
    handle->fd = proc->nextFD;
    proc->nextFD++;
    handle->processId = proc->pid;
 
    slot = handle->fd % PROCESS_HANDLE_SLOTS;
 
    TAILQ_INSERT_HEAD(&proc->handles[slot], handle, handleList);
 
    return handle->fd;
}

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Handle_Destroy()

void Handle_Destroy

(

Process *

proc

)

Definition at line 33 of file handle.c.

{
    int i;
    Handle *handle, *handle_tmp;
 
    for (i = 0; i < PROCESS_HANDLE_SLOTS; i++) {
        TAILQ_FOREACH_SAFE(handle, &proc->handles[i], handleList, handle_tmp) {
            TAILQ_REMOVE(&proc->handles[i], handle, handleList);
            (handle->close)(handle);
        }
    }
}

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Handle_GlobalInit()

void Handle_GlobalInit

(

)

Definition at line 15 of file handle.c.

{
    Slab_Init(&handleSlab, "Handle Objects", sizeof(Handle), 16);
}

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Handle_Init()

void Handle_Init

(

Process *

proc

)

Definition at line 23 of file handle.c.

{
    int i;
 
    for (i = 0; i < PROCESS_HANDLE_SLOTS; i++) {
        TAILQ_INIT(&proc->handles[i]);
    }
}

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Handle_Lookup()

Handle * Handle_Lookup	(	Process *	proc,
		uint64_t	fd
	)

Definition at line 71 of file handle.c.

{
    int slot = fd % PROCESS_HANDLE_SLOTS;
    Handle *handle;
 
    TAILQ_FOREACH(handle, &proc->handles[slot], handleList) {
        if (handle->fd == fd)
            return handle;
    }
 
    return NULL;
}

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Handle_Remove()

void Handle_Remove	(	Process *	proc,
		Handle *	handle
	)

Definition at line 63 of file handle.c.

{
    int slot = handle->fd % PROCESS_HANDLE_SLOTS;
 
    TAILQ_REMOVE(&proc->handles[slot], handle, handleList);
}

Variable Documentation

handleSlab

Slab handleSlab

Definition at line 12 of file handle.c.