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Changed callbacks to take user-provided context directly

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This is a style change to make littlefs's callbacks consistent with most
callback declarations found in C. That is, taking in a user-provided
`void*`.

Previously, these callbacks took a pointer to the config struct itself,
which indirectly contained a user provided context, and this gets the
job done, but taking in a callback with a `void*` is arguably more
expected, has a better chance of integrating with C++/OS-specific code,
and is more likely to be optimized out by a clever compiler.

---

As a part of these changes, the geometry for the test bds needed to be
moved into bd specific configuration objects. This is a good change as
it also allows for testing situations where littlefs's geometry does not
match the underlying bd.
This commit is contained in:
Christopher Haster
2020-11-26 09:16:20 -06:00
parent a549413077
commit a7cdd563f6
15 changed files with 383 additions and 397 deletions
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20
lfs.c
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@@ -34,13 +34,13 @@
#else
// direct config towards dynamic lfs_cfg struct
#define LFS_CFG_READ(lfs, block, off, buffer, size) \
lfs->cfg->read(lfs->cfg, block, off, buffer, size)
lfs->cfg->read(lfs->cfg->ctx, block, off, buffer, size)
#define LFS_CFG_PROG(lfs, block, off, buffer, size) \
lfs->cfg->prog(lfs->cfg, block, off, buffer, size)
lfs->cfg->prog(lfs->cfg->ctx, block, off, buffer, size)
#define LFS_CFG_ERASE(lfs, block) \
lfs->cfg->erase(lfs->cfg, block)
lfs->cfg->erase(lfs->cfg->ctx, block)
#define LFS_CFG_SYNC(lfs) \
lfs->cfg->sync(lfs->cfg)
lfs->cfg->sync(lfs->cfg->ctx)
#define LFS_CFG_READ_SIZE(lfs) lfs->cfg->read_size
#define LFS_CFG_PROG_SIZE(lfs) lfs->cfg->prog_size
#define LFS_CFG_BLOCK_SIZE(lfs) lfs->cfg->block_size
@@ -3732,7 +3732,7 @@ int lfs_format(lfs_t *lfs) {
#if !defined(LFS_STATICCFG)
int lfs_formatcfg(lfs_t *lfs, const struct lfs_cfg *cfg) {
LFS_TRACE("lfs_formatcfg(%p, %p {.context=%p, "
LFS_TRACE("lfs_formatcfg(%p, %p {.ctx=%p, "
".read=%p, .prog=%p, .erase=%p, .sync=%p, "
".read_size=%"PRIu32", .prog_size=%"PRIu32", "
".block_size=%"PRIu32", .block_count=%"PRIu32", "
@@ -3741,7 +3741,7 @@ int lfs_formatcfg(lfs_t *lfs, const struct lfs_cfg *cfg) {
".prog_buffer=%p, .lookahead_buffer=%p, "
".name_max=%"PRIu32", .file_max=%"PRIu32", "
".attr_max=%"PRIu32"})",
(void*)lfs, (void*)cfg, cfg->context,
(void*)lfs, (void*)cfg, cfg->ctx,
(void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog,
(void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync,
cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count,
@@ -3893,7 +3893,7 @@ int lfs_mount(lfs_t *lfs) {
#if !defined(LFS_STATICCFG)
int lfs_mountcfg(lfs_t *lfs, const struct lfs_cfg *cfg) {
LFS_TRACE("lfs_mountcfg(%p, %p {.context=%p, "
LFS_TRACE("lfs_mountcfg(%p, %p {.ctx=%p, "
".read=%p, .prog=%p, .erase=%p, .sync=%p, "
".read_size=%"PRIu32", .prog_size=%"PRIu32", "
".block_size=%"PRIu32", .block_count=%"PRIu32", "
@@ -3902,7 +3902,7 @@ int lfs_mountcfg(lfs_t *lfs, const struct lfs_cfg *cfg) {
".prog_buffer=%p, .lookahead_buffer=%p, "
".name_max=%"PRIu32", .file_max=%"PRIu32", "
".attr_max=%"PRIu32"})",
(void*)lfs, (void*)cfg, cfg->context,
(void*)lfs, (void*)cfg, cfg->ctx,
(void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog,
(void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync,
cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count,
@@ -5009,7 +5009,7 @@ int lfs_migrate(lfs_t *lfs) {
#if !defined(LFS_STATICCFG)
int lfs_migratecfg(lfs_t *lfs, const struct lfs_cfg *cfg) {
LFS_TRACE("lfs_migratecfg(%p, %p {.context=%p, "
LFS_TRACE("lfs_migratecfg(%p, %p {.ctx=%p, "
".read=%p, .prog=%p, .erase=%p, .sync=%p, "
".read_size=%"PRIu32", .prog_size=%"PRIu32", "
".block_size=%"PRIu32", .block_count=%"PRIu32", "
@@ -5018,7 +5018,7 @@ int lfs_migratecfg(lfs_t *lfs, const struct lfs_cfg *cfg) {
".prog_buffer=%p, .lookahead_buffer=%p, "
".name_max=%"PRIu32", .file_max=%"PRIu32", "
".attr_max=%"PRIu32"})",
(void*)lfs, (void*)cfg, cfg->context,
(void*)lfs, (void*)cfg, cfg->ctx,
(void*)(uintptr_t)cfg->read, (void*)(uintptr_t)cfg->prog,
(void*)(uintptr_t)cfg->erase, (void*)(uintptr_t)cfg->sync,
cfg->read_size, cfg->prog_size, cfg->block_size, cfg->block_count,