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minix/include/minix/sef.h
David van Moolenbroek 060399d9dd SEF: add sef_cancel() 
This function allows the caller to cancel receiving a message from a
SEF callback. The receive function will then return EINTR.
2012-04-09 16:35:57 +02:00

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/* Prototypes for System Event Framework (SEF) functions. */
#ifndef _SEF_H
#define _SEF_H
#include <minix/ipc.h>
/* SEF entry points for system processes. */
void sef_startup(void);
int sef_receive_status(endpoint_t src, message *m_ptr, int *status_ptr);
void sef_cancel(void);
void sef_exit(int status);
#define sef_receive(src, m_ptr) sef_receive_status(src, m_ptr, NULL)
/* SEF Debug. */
#include <stdio.h>
#define sef_dprint printf
#define sef_debug_begin() (void)(NULL)
#define sef_debug_end() (void)(NULL)
/*===========================================================================*
* SEF Init *
*===========================================================================*/
/* What to intercept. */
#define INTERCEPT_SEF_INIT_REQUESTS 1
#define IS_SEF_INIT_REQUEST(mp) ((mp)->m_type == RS_INIT \
&& (mp)->m_source == RS_PROC_NR)
/* Type definitions. */
typedef struct {
cp_grant_id_t rproctab_gid;
endpoint_t endpoint;
endpoint_t old_endpoint;
} sef_init_info_t;
/* Callback type definitions. */
typedef int(*sef_cb_init_t)(int type, sef_init_info_t *info);
typedef int(*sef_cb_init_response_t)(message *m_ptr);
/* Callback registration helpers. */
void sef_setcb_init_fresh(sef_cb_init_t cb);
void sef_setcb_init_lu(sef_cb_init_t cb);
void sef_setcb_init_restart(sef_cb_init_t cb);
void sef_setcb_init_response(sef_cb_init_response_t cb);
/* Predefined callback implementations. */
int sef_cb_init_null(int type, sef_init_info_t *info);
int sef_cb_init_response_null(message *m_ptr);
int sef_cb_init_fail(int type, sef_init_info_t *info);
int sef_cb_init_reset(int type, sef_init_info_t *info);
int sef_cb_init_crash(int type, sef_init_info_t *info);
int sef_cb_init_response_rs_reply(message *m_ptr);
/* Macros for predefined callback implementations. */
#define SEF_CB_INIT_FRESH_NULL sef_cb_init_null
#define SEF_CB_INIT_LU_NULL sef_cb_init_null
#define SEF_CB_INIT_RESTART_NULL sef_cb_init_null
#define SEF_CB_INIT_RESPONSE_NULL sef_cb_init_response_null
#define SEF_CB_INIT_FRESH_DEFAULT sef_cb_init_null
#define SEF_CB_INIT_LU_DEFAULT sef_cb_init_null
#define SEF_CB_INIT_RESTART_DEFAULT sef_cb_init_reset
#define SEF_CB_INIT_RESPONSE_DEFAULT sef_cb_init_response_rs_reply
/* Init types. */
#define SEF_INIT_FRESH 0 /* init fresh */
#define SEF_INIT_LU 1 /* init after live update */
#define SEF_INIT_RESTART 2 /* init after restart */
/* Debug. */
#define SEF_INIT_DEBUG_DEFAULT 0
#ifndef SEF_INIT_DEBUG
#define SEF_INIT_DEBUG SEF_INIT_DEBUG_DEFAULT
#endif
#define sef_init_dprint sef_dprint
#define sef_init_debug_begin sef_debug_begin
#define sef_init_debug_end sef_debug_end
/*===========================================================================*
* SEF Ping *
*===========================================================================*/
/* What to intercept. */
#define INTERCEPT_SEF_PING_REQUESTS 1
#define IS_SEF_PING_REQUEST(mp, status) (is_ipc_notify(status) \
&& (mp)->m_source == RS_PROC_NR)
/* Callback type definitions. */
typedef void(*sef_cb_ping_reply_t)(endpoint_t source);
/* Callback registration helpers. */
void sef_setcb_ping_reply(sef_cb_ping_reply_t cb);
/* Predefined callback implementations. */
void sef_cb_ping_reply_null(endpoint_t source);
void sef_cb_ping_reply_pong(endpoint_t source);
/* Macros for predefined callback implementations. */
#define SEF_CB_PING_REPLY_NULL sef_cb_ping_reply_null
#define SEF_CB_PING_REPLY_DEFAULT sef_cb_ping_reply_pong
/* Debug. */
#define SEF_PING_DEBUG_DEFAULT 0
#ifndef SEF_PING_DEBUG
#define SEF_PING_DEBUG SEF_PING_DEBUG_DEFAULT
#endif
#define sef_ping_dprint sef_dprint
#define sef_ping_debug_begin sef_debug_begin
#define sef_ping_debug_end sef_debug_end
/*===========================================================================*
* SEF Live update *
*===========================================================================*/
/* What to intercept. */
#define INTERCEPT_SEF_LU_REQUESTS 1
#define IS_SEF_LU_REQUEST(mp, status) ((mp)->m_type == RS_LU_PREPARE \
&& (mp)->m_source == RS_PROC_NR)
/* Callback type definitions. */
typedef int(*sef_cb_lu_prepare_t)(int);
typedef int(*sef_cb_lu_state_isvalid_t)(int);
typedef void(*sef_cb_lu_state_changed_t)(int, int);
typedef void(*sef_cb_lu_state_dump_t)(int);
typedef int(*sef_cb_lu_state_save_t)(int);
typedef int(*sef_cb_lu_response_t)(message *m_ptr);
/* Callback registration helpers. */
void sef_setcb_lu_prepare(sef_cb_lu_prepare_t cb);
void sef_setcb_lu_state_isvalid(sef_cb_lu_state_isvalid_t cb);
void sef_setcb_lu_state_changed(sef_cb_lu_state_changed_t cb);
void sef_setcb_lu_state_dump(sef_cb_lu_state_dump_t cb);
void sef_setcb_lu_state_save(sef_cb_lu_state_save_t cb);
void sef_setcb_lu_response(sef_cb_lu_response_t cb);
/* Predefined callback implementations. */
int sef_cb_lu_prepare_null(int state);
int sef_cb_lu_state_isvalid_null(int state);
void sef_cb_lu_state_changed_null(int old_state, int state);
void sef_cb_lu_state_dump_null(int state);
int sef_cb_lu_state_save_null(int state);
int sef_cb_lu_response_null(message *m_ptr);
int sef_cb_lu_prepare_always_ready(int state);
int sef_cb_lu_prepare_never_ready(int state);
int sef_cb_lu_prepare_crash(int state);
int sef_cb_lu_state_isvalid_standard(int state);
int sef_cb_lu_state_isvalid_workfree(int state);
int sef_cb_lu_response_rs_reply(message *m_ptr);
/* Macros for predefined callback implementations. */
#define SEF_CB_LU_PREPARE_NULL sef_cb_lu_prepare_null
#define SEF_CB_LU_STATE_ISVALID_NULL sef_cb_lu_state_isvalid_null
#define SEF_CB_LU_STATE_CHANGED_NULL sef_cb_lu_state_changed_null
#define SEF_CB_LU_STATE_DUMP_NULL sef_cb_lu_state_dump_null
#define SEF_CB_LU_STATE_SAVE_NULL sef_cb_lu_state_save_null
#define SEF_CB_LU_RESPONSE_NULL sef_cb_lu_response_null
#define SEF_CB_LU_PREPARE_DEFAULT sef_cb_lu_prepare_null
#define SEF_CB_LU_STATE_ISVALID_DEFAULT sef_cb_lu_state_isvalid_null
#define SEF_CB_LU_STATE_CHANGED_DEFAULT sef_cb_lu_state_changed_null
#define SEF_CB_LU_STATE_DUMP_DEFAULT sef_cb_lu_state_dump_null
#define SEF_CB_LU_STATE_SAVE_DEFAULT sef_cb_lu_state_save_null
#define SEF_CB_LU_RESPONSE_DEFAULT sef_cb_lu_response_rs_reply
/* Standard live update states. */
#define SEF_LU_STATE_NULL 0 /* null state */
#define SEF_LU_STATE_WORK_FREE 1 /* no work in progress */
#define SEF_LU_STATE_REQUEST_FREE 2 /* no request in progress */
#define SEF_LU_STATE_PROTOCOL_FREE 3 /* no protocol in progress */
#define SEF_LU_STATE_CUSTOM_BASE (SEF_LU_STATE_PROTOCOL_FREE+1)
#define SEF_LU_STATE_IS_STANDARD(s) ((s) > SEF_LU_STATE_NULL \
&& (s) < SEF_LU_STATE_CUSTOM_BASE)
/* Debug. */
#define SEF_LU_DEBUG_DEFAULT 1
#ifndef SEF_LU_DEBUG
#define SEF_LU_DEBUG SEF_LU_DEBUG_DEFAULT
#endif
#define sef_lu_dprint sef_dprint
#define sef_lu_debug_begin sef_debug_begin
#define sef_lu_debug_end sef_debug_end
/*===========================================================================*
* SEF Signal *
*===========================================================================*/
/* What to intercept. */
#define INTERCEPT_SEF_SIGNAL_REQUESTS 1
#define IS_SEF_SIGNAL_REQUEST(mp, status) \
(((mp)->m_type == SIGS_SIGNAL_RECEIVED && (mp)->m_source < INIT_PROC_NR) \
|| (is_ipc_notify(status) && (mp)->m_source == SYSTEM))
/* Callback type definitions. */
typedef void(*sef_cb_signal_handler_t)(int signo);
typedef int(*sef_cb_signal_manager_t)(endpoint_t target, int signo);
typedef int(*sef_cb_gcov_t)(message *msg);
/* Callback registration helpers. */
void sef_setcb_signal_handler(sef_cb_signal_handler_t cb);
void sef_setcb_signal_manager(sef_cb_signal_manager_t cb);
void sef_setcb_gcov(sef_cb_gcov_t cb);
/* Predefined callback implementations. */
void sef_cb_signal_handler_null(int signo);
int sef_cb_signal_manager_null(endpoint_t target, int signo);
void sef_cb_signal_handler_term(int signo);
void sef_cb_signal_handler_posix_default(int signo);
/* Macros for predefined callback implementations. */
#define SEF_CB_SIGNAL_HANDLER_NULL sef_cb_signal_handler_null
#define SEF_CB_SIGNAL_MANAGER_NULL sef_cb_signal_manager_null
#define SEF_CB_SIGNAL_HANDLER_DEFAULT sef_cb_signal_handler_null
#define SEF_CB_SIGNAL_MANAGER_DEFAULT sef_cb_signal_manager_null
/* Debug. */
#define SEF_SIGNAL_DEBUG_DEFAULT 0
#ifndef SEF_SIGNAL_DEBUG
#define SEF_SIGNAL_DEBUG SEF_SIGNAL_DEBUG_DEFAULT
#endif
#define sef_signal_dprint sef_dprint
#define sef_signal_debug_begin sef_debug_begin
#define sef_signal_debug_end sef_debug_end
#if !defined(USE_LIVEUPDATE)
#undef INTERCEPT_SEF_LU_REQUESTS
#undef SEF_LU_DEBUG
#endif
#endif /* _SEF_H */
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