fsmonitor.h

   1 #ifndef FSMONITOR_H
   2 #define FSMONITOR_H
   3
   4 #include "fsmonitor-ll.h"
   5 #include "dir.h"
   6 #include "fsmonitor-settings.h"
   7 #include "object.h"
   8 #include "read-cache-ll.h"
   9 #include "trace.h"
  10
  11 /*
  12  * Check if refresh_fsmonitor has been called at least once.
  13  * refresh_fsmonitor is idempotent. Returns true if fsmonitor is
  14  * not enabled (since the state will be "fresh" w/ CE_FSMONITOR_VALID unset)
  15  * This version is useful for assertions
  16  */
  17 static inline int is_fsmonitor_refreshed(const struct index_state *istate)
  18 {
  19         enum fsmonitor_mode fsm_mode = fsm_settings__get_mode(istate->repo);
  20
  21         return fsm_mode <= FSMONITOR_MODE_DISABLED ||
  22                 istate->fsmonitor_has_run_once;
  23 }
  24
  25 /*
  26  * Set the given cache entries CE_FSMONITOR_VALID bit. This should be
  27  * called any time the cache entry has been updated to reflect the
  28  * current state of the file on disk.
  29  *
  30  * However, never mark submodules as valid.  When commands like "git
  31  * status" run they might need to recurse into the submodule (using a
  32  * child process) to get a summary of the submodule state.  We don't
  33  * have (and don't want to create) the facility to translate every
  34  * FS event that we receive and that happens to be deep inside of a
  35  * submodule back to the submodule root, so we cannot correctly keep
  36  * track of this bit on the gitlink directory.  Therefore, we never
  37  * set it on submodules.
  38  */
  39 static inline void mark_fsmonitor_valid(struct index_state *istate, struct cache_entry *ce)
  40 {
  41         enum fsmonitor_mode fsm_mode = fsm_settings__get_mode(istate->repo);
  42
  43         if (fsm_mode > FSMONITOR_MODE_DISABLED &&
  44             !(ce->ce_flags & CE_FSMONITOR_VALID)) {
  45                 if (S_ISGITLINK(ce->ce_mode))
  46                         return;
  47                 istate->cache_changed |= FSMONITOR_CHANGED;
  48                 ce->ce_flags |= CE_FSMONITOR_VALID;
  49                 trace_printf_key(&trace_fsmonitor, "mark_fsmonitor_clean '%s'", ce->name);
  50         }
  51 }
  52
  53 /*
  54  * Clear the given cache entry's CE_FSMONITOR_VALID bit and invalidate
  55  * any corresponding untracked cache directory structures. This should
  56  * be called any time git creates or modifies a file that should
  57  * trigger an lstat() or invalidate the untracked cache for the
  58  * corresponding directory
  59  */
  60 static inline void mark_fsmonitor_invalid(struct index_state *istate, struct cache_entry *ce)
  61 {
  62         enum fsmonitor_mode fsm_mode = fsm_settings__get_mode(istate->repo);
  63
  64         if (fsm_mode > FSMONITOR_MODE_DISABLED) {
  65                 ce->ce_flags &= ~CE_FSMONITOR_VALID;
  66                 untracked_cache_invalidate_path(istate, ce->name, 1);
  67                 trace_printf_key(&trace_fsmonitor, "mark_fsmonitor_invalid '%s'", ce->name);
  68         }
  69 }
  70
  71 #endif