summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--firmware/buflib.c28
-rw-r--r--firmware/core_alloc.c6
-rw-r--r--firmware/include/buflib.h8
-rw-r--r--firmware/include/core_alloc.h7
4 files changed, 27 insertions, 22 deletions
diff --git a/firmware/buflib.c b/firmware/buflib.c
index 294d2926d3..27a6965ee0 100644
--- a/firmware/buflib.c
+++ b/firmware/buflib.c
@@ -105,6 +105,8 @@ void
buflib_init(struct buflib_context *ctx, void *buf, size_t size)
{
union buflib_data *bd_buf = buf;
+ BDEBUGF("buflib initialized with %lu.%02lu kiB",
+ (unsigned long)size / 1024, ((unsigned long)size%1000)/10);
/* Align on sizeof(buflib_data), to prevent unaligned access */
ALIGN_BUFFER(bd_buf, size, sizeof(union buflib_data));
@@ -119,9 +121,6 @@ buflib_init(struct buflib_context *ctx, void *buf, size_t size)
*/
ctx->alloc_end = bd_buf;
ctx->compact = true;
-
- BDEBUGF("buflib initialized with %lu.%2lu kiB",
- (unsigned long)size / 1024, ((unsigned long)size%1000)/10);
}
bool buflib_context_relocate(struct buflib_context *ctx, void *buf)
@@ -206,12 +205,16 @@ void handle_free(struct buflib_context *ctx, union buflib_data *handle)
}
/* Get the start block of an allocation */
-static union buflib_data* handle_to_block(struct buflib_context* ctx, int handle)
+static inline
+union buflib_data* handle_to_block(struct buflib_context* ctx, int handle)
{
- union buflib_data* name_field =
- (union buflib_data*)buflib_get_name(ctx, handle);
-
- return name_field ? name_field - 3 : NULL;
+ union buflib_data *data = ALIGN_DOWN(buflib_get_data(ctx, handle), sizeof (*data));
+ /* this is a valid case, e.g. during buflib_alloc_ex() when the handle
+ * has already been allocated but not the data */
+ if (!data)
+ return NULL;
+ volatile size_t len = data[-2].val;
+ return data - (len + 4);
}
/* Shrink the handle table, returning true if its size was reduced, false if
@@ -480,7 +483,7 @@ buflib_buffer_in(struct buflib_context *ctx, int size)
int
buflib_alloc(struct buflib_context *ctx, size_t size)
{
- return buflib_alloc_ex(ctx, size, "<anonymous>", NULL);
+ return buflib_alloc_ex(ctx, size, NULL, NULL);
}
/* Allocate a buffer of size bytes, returning a handle for it.
@@ -588,7 +591,8 @@ buffer_alloc:
block->val = size;
block[1].handle = handle;
block[2].ops = ops;
- strcpy(block[3].name, name);
+ if (name_len > 0)
+ strcpy(block[3].name, name);
name_len_slot = (union buflib_data*)B_ALIGN_UP(block[3].name + name_len);
name_len_slot->val = 1 + name_len/sizeof(union buflib_data);
crc_slot = (union buflib_data*)(name_len_slot + 1);
@@ -599,7 +603,7 @@ buffer_alloc:
BDEBUGF("buflib_alloc_ex: size=%d handle=%p clb=%p crc=0x%0x name=\"%s\"\n",
(unsigned int)size, (void *)handle, (void *)ops,
- (unsigned int)crc_slot->crc, block[3].name);
+ (unsigned int)crc_slot->crc, name ? block[3].name:"");
block += size;
/* alloc_end must be kept current if we're taking the last block. */
@@ -889,8 +893,6 @@ buflib_shrink(struct buflib_context* ctx, int handle, void* new_start, size_t ne
const char* buflib_get_name(struct buflib_context *ctx, int handle)
{
union buflib_data *data = ALIGN_DOWN(buflib_get_data(ctx, handle), sizeof (*data));
- if (!data)
- return NULL;
size_t len = data[-2].val;
if (len <= 1)
return NULL;
diff --git a/firmware/core_alloc.c b/firmware/core_alloc.c
index 68c400f669..58e12141e1 100644
--- a/firmware/core_alloc.c
+++ b/firmware/core_alloc.c
@@ -87,6 +87,12 @@ bool core_shrink(int handle, void* new_start, size_t new_size)
return buflib_shrink(&core_ctx, handle, new_start, new_size);
}
+const char* core_get_name(int handle)
+{
+ const char *name = buflib_get_name(&core_ctx, handle);
+ return name ?: "<anonymous>";
+}
+
int core_get_num_blocks(void)
{
return buflib_get_num_blocks(&core_ctx);
diff --git a/firmware/include/buflib.h b/firmware/include/buflib.h
index 30484431f8..e912429b1f 100644
--- a/firmware/include/buflib.h
+++ b/firmware/include/buflib.h
@@ -303,12 +303,14 @@ void buflib_buffer_in(struct buflib_context *ctx, int size);
/* debugging */
/**
- * Returns the name, as given to core_alloc() and core_allloc_ex(), of the
- * allocation associated with the given handle
+ * Returns the name, as given to buflib_alloc() and buflib_allloc_ex(), of the
+ * allocation associated with the given handle. As naming allocations
+ * is optional, there might be no name associated.
*
* handle: The handle indicating the allocation
*
- * Returns: A pointer to the string identifier of the allocation
+ * Returns: A pointer to the string identifier of the allocation, or NULL
+ * if none was specified with buflib_alloc_ex/(.
*/
const char* buflib_get_name(struct buflib_context *ctx, int handle);
diff --git a/firmware/include/core_alloc.h b/firmware/include/core_alloc.h
index 095cb5da11..67fe99dfdc 100644
--- a/firmware/include/core_alloc.h
+++ b/firmware/include/core_alloc.h
@@ -17,6 +17,7 @@ bool core_shrink(int handle, void* new_start, size_t new_size);
int core_free(int handle);
size_t core_available(void);
size_t core_allocatable(void);
+const char* core_get_name(int handle);
#ifdef DEBUG
void core_check_valid(void);
#endif
@@ -43,10 +44,4 @@ static inline void* core_get_data(int handle)
return buflib_get_data(&core_ctx, handle);
}
-static inline const char* core_get_name(int handle)
-{
- extern struct buflib_context core_ctx;
- return buflib_get_name(&core_ctx, handle);
-}
-
#endif /* __CORE_ALLOC_H__ */