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Tweaked thread-safe implementation

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- Stayed on non-system include for lfs_util.h for now
- Named internal functions "lfs_functionraw"
- Merged lfs_fs_traverseraw
- Added LFS_LOCK/UNLOCK macros
- Changed LFS_THREADSAFE from 1/0 to defined/undefined to
  match LFS_READONLY
This commit is contained in:
Christopher Haster
2020-11-28 11:15:23 -06:00
parent aab8df756f
commit 1c5081adb8
3 changed files with 360 additions and 498 deletions
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849
lfs.c
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4
lfs.h
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@@ -9,7 +9,7 @@
#include <stdint.h> #include <stdint.h>
#include <stdbool.h> #include <stdbool.h>
#include <lfs_util.h> #include "lfs_util.h"
#ifdef __cplusplus #ifdef __cplusplus
extern "C" extern "C"
@@ -174,7 +174,7 @@ struct lfs_config {
// are propogated to the user. // are propogated to the user.
int (*sync)(const struct lfs_config *c); int (*sync)(const struct lfs_config *c);
#if LFS_THREADSAFE #ifdef LFS_THREADSAFE
// Lock the underlying block device. Negative error codes // Lock the underlying block device. Negative error codes
// are propogated to the user. // are propogated to the user.
int (*lock)(const struct lfs_config *c); int (*lock)(const struct lfs_config *c);

5
lfs_util.h
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@@ -43,11 +43,6 @@ extern "C"
{ {
#endif #endif
// Enables thread-safe wrappers using the lock/unlock callbacks in lfs_config
#ifndef LFS_THREADSAFE
#define LFS_THREADSAFE 0
#endif
// Macros, may be replaced by system specific wrappers. Arguments to these // Macros, may be replaced by system specific wrappers. Arguments to these
// macros must not have side-effects as the macros can be removed for a smaller // macros must not have side-effects as the macros can be removed for a smaller
// code footprint // code footprint