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| | #include "cache.h"
#include "config.h"
#include "fsmonitor.h"
#include "fsm-health.h"
#include "fsmonitor--daemon.h"
/*
* Every minute wake up and test our health.
*/
#define WAIT_FREQ_MS (60 * 1000)
enum interval_fn_ctx { CTX_INIT = 0, CTX_TERM, CTX_TIMER };
typedef int (interval_fn)(struct fsmonitor_daemon_state *state,
enum interval_fn_ctx ctx);
static interval_fn *table[] = {
NULL, /* must be last */
};
/*
* Call all of the functions in the table.
* Shortcut and return first error.
*
* Return 0 if all succeeded.
*/
static int call_all(struct fsmonitor_daemon_state *state,
enum interval_fn_ctx ctx)
{
int k;
for (k = 0; table[k]; k++) {
int r = table[k](state, ctx);
if (r)
return r;
}
return 0;
}
struct fsm_health_data
{
HANDLE hEventShutdown;
HANDLE hHandles[1]; /* the array does not own these handles */
#define HEALTH_SHUTDOWN 0
int nr_handles; /* number of active event handles */
};
int fsm_health__ctor(struct fsmonitor_daemon_state *state)
{
struct fsm_health_data *data;
CALLOC_ARRAY(data, 1);
data->hEventShutdown = CreateEvent(NULL, TRUE, FALSE, NULL);
data->hHandles[HEALTH_SHUTDOWN] = data->hEventShutdown;
data->nr_handles++;
state->health_data = data;
return 0;
}
void fsm_health__dtor(struct fsmonitor_daemon_state *state)
{
struct fsm_health_data *data;
if (!state || !state->health_data)
return;
data = state->health_data;
CloseHandle(data->hEventShutdown);
FREE_AND_NULL(state->health_data);
}
void fsm_health__loop(struct fsmonitor_daemon_state *state)
{
struct fsm_health_data *data = state->health_data;
int r;
r = call_all(state, CTX_INIT);
if (r < 0)
goto force_error_stop;
if (r > 0)
goto force_shutdown;
for (;;) {
DWORD dwWait = WaitForMultipleObjects(data->nr_handles,
data->hHandles,
FALSE, WAIT_FREQ_MS);
if (dwWait == WAIT_OBJECT_0 + HEALTH_SHUTDOWN)
goto clean_shutdown;
if (dwWait == WAIT_TIMEOUT) {
r = call_all(state, CTX_TIMER);
if (r < 0)
goto force_error_stop;
if (r > 0)
goto force_shutdown;
continue;
}
error(_("health thread wait failed [GLE %ld]"),
GetLastError());
goto force_error_stop;
}
force_error_stop:
state->health_error_code = -1;
force_shutdown:
ipc_server_stop_async(state->ipc_server_data);
clean_shutdown:
call_all(state, CTX_TERM);
return;
}
void fsm_health__stop_async(struct fsmonitor_daemon_state *state)
{
SetEvent(state->health_data->hHandles[HEALTH_SHUTDOWN]);
}
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