47 lines
787 B
C
47 lines
787 B
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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*/
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#ifndef SHM_H
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#define SHM_H
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#include <system.h>
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#include <types.h>
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#define SHM_PATH_SEPARATOR "."
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#define SHM_START 0xB0000000
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/* Types */
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struct shm_node;
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typedef struct {
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struct shm_node * parent;
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volatile uint8_t lock;
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int32_t ref_count;
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uint32_t num_frames;
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uintptr_t *frames;
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} shm_chunk_t;
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typedef struct shm_node {
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char name[256];
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shm_chunk_t * chunk;
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} shm_node_t;
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typedef struct {
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shm_chunk_t * chunk;
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uint8_t volatile lock;
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uint32_t num_vaddrs;
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uintptr_t *vaddrs;
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} shm_mapping_t;
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/* Syscalls */
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extern void * shm_obtain(char * path, size_t * size);
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extern int shm_release(char * path);
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/* Other exposed functions */
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extern void shm_install(void);
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extern void shm_release_all(process_t * proc);
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#endif
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