Commit: 1c23b5c6ff5b3691a9e28d9576addce28b14a1a9
Author: Campbell Barton
Date: Sat Apr 14 13:17:11 2018 +0200
Branches: master
https://developer.blender.org/rB1c23b5c6ff5b3691a9e28d9576addce28b14a1a9
Cleanup: rename WriteData struct members.
Relationship between tot/count/buf wasn't clear.
Also use doxy sections.
===================================================================
M source/blender/blenloader/intern/writefile.c
===================================================================
diff --git a/source/blender/blenloader/intern/writefile.c
b/source/blender/blenloader/intern/writefile.c
index 6ee97833e47..9727f6f0011 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -196,8 +196,11 @@
#define MYWRITE_BUFFER_SIZE (MEM_SIZE_OPTIMAL(1 << 17)) /* 128kb */
#define MYWRITE_MAX_CHUNK (MEM_SIZE_OPTIMAL(1 << 15)) /* ~32kb */
+/** Use if we want to store how many bytes have been written to the file. */
+// #define USE_WRITE_DATA_LEN
-/** \name Small API to handle compression.
+/* -------------------------------------------------------------------- */
+/** \name Internal Write Wrapper's (Abstracts Compression)
* \{ */
typedef enum {
@@ -301,14 +304,24 @@ static void ww_handle_init(eWriteWrapType ww_type,
WriteWrap *r_ww)
/** \} */
-
+/* -------------------------------------------------------------------- */
+/** \name Write Data Type & Functions
+ * \{ */
typedef struct {
const struct SDNA *sdna;
/** Use for file and memory writing (fixed size of
#MYWRITE_BUFFER_SIZE). */
uchar *buf;
- int tot, count;
+ /** Number of bytes used in #WriteData.buf (flushed when exceeded). */
+ int buf_used_len;
+
+#ifdef USE_WRITE_DATA_LEN
+ /** Total number of bytes written. */
+ size_t write_len;
+#endif
+
+ /** Set on unlikely case of an error (ignores further file writing). */
bool error;
/** #MemFile writing (used for undo). */
@@ -373,7 +386,11 @@ static void writedata_free(WriteData *wd)
MEM_freeN(wd);
}
-/***/
+/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name Local Writing API 'mywrite'
+ * \{ */
/**
* Flush helps the de-duplicating memory for undo-save by logically segmenting
data,
@@ -381,9 +398,9 @@ static void writedata_free(WriteData *wd)
*/
static void mywrite_flush(WriteData *wd)
{
- if (wd->count) {
- writedata_do_write(wd, wd->buf, wd->count);
- wd->count = 0;
+ if (wd->buf_used_len) {
+ writedata_do_write(wd, wd->buf, wd->buf_used_len);
+ wd->buf_used_len = 0;
}
}
@@ -391,7 +408,6 @@ static void mywrite_flush(WriteData *wd)
* Low level WRITE(2) wrapper that buffers data
* \param adr Pointer to new chunk of data
* \param len Length of new chunk of data
- * \warning Talks to other functions with global parameters
*/
static void mywrite(WriteData *wd, const void *adr, int len)
{
@@ -399,19 +415,21 @@ static void mywrite(WriteData *wd, const void *adr, int
len)
return;
}
- if (adr == NULL) {
+ if (UNLIKELY(adr == NULL)) {
BLI_assert(0);
return;
}
- wd->tot += len;
+#ifdef USE_WRITE_DATA_LEN
+ wd->write_len += len;
+#endif
/* if we have a single big chunk, write existing data in
* buffer and write out big chunk in smaller pieces */
if (len > MYWRITE_MAX_CHUNK) {
- if (wd->count) {
- writedata_do_write(wd, wd->buf, wd->count);
- wd->count = 0;
+ if (wd->buf_used_len) {
+ writedata_do_write(wd, wd->buf, wd->buf_used_len);
+ wd->buf_used_len = 0;
}
do {
@@ -425,14 +443,14 @@ static void mywrite(WriteData *wd, const void *adr, int
len)
}
/* if data would overflow buffer, write out the buffer */
- if (len + wd->count > MYWRITE_BUFFER_SIZE - 1) {
- writedata_do_write(wd, wd->buf, wd->count);
- wd->count = 0;
+ if (len + wd->buf_used_len > MYWRITE_BUFFER_SIZE - 1) {
+ writedata_do_write(wd, wd->buf, wd->buf_used_len);
+ wd->buf_used_len = 0;
}
/* append data at end of buffer */
- memcpy(&wd->buf[wd->count], adr, len);
- wd->count += len;
+ memcpy(&wd->buf[wd->buf_used_len], adr, len);
+ wd->buf_used_len += len;
}
/**
@@ -442,7 +460,7 @@ static void mywrite(WriteData *wd, const void *adr, int len)
* \param current The current memory file (can be NULL).
* \warning Talks to other functions with global parameters
*/
-static WriteData *bgnwrite(WriteWrap *ww, MemFile *compare, MemFile *current)
+static WriteData *mywrite_begin(WriteWrap *ww, MemFile *compare, MemFile
*current)
{
WriteData *wd = writedata_new(ww);
@@ -462,11 +480,11 @@ static WriteData *bgnwrite(WriteWrap *ww, MemFile
*compare, MemFile *current)
* \return unknown global variable otherwise
* \warning Talks to other functions with global parameters
*/
-static bool endwrite(WriteData *wd)
+static bool mywrite_end(WriteData *wd)
{
- if (wd->count) {
- writedata_do_write(wd, wd->buf, wd->count);
- wd->count = 0;
+ if (wd->buf_used_len) {
+ writedata_do_write(wd, wd->buf, wd->buf_used_len);
+ wd->buf_used_len = 0;
}
const bool err = wd->error;
@@ -475,7 +493,11 @@ static bool endwrite(WriteData *wd)
return err;
}
-/* ********** WRITE FILE ****************** */
+/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name Generic DNA File Writing
+ * \{ */
static void writestruct_at_address_nr(
WriteData *wd, int filecode, const int struct_nr, int nr,
@@ -601,8 +623,14 @@ static void writelist_id(WriteData *wd, int filecode,
const char *structname, co
#define writelist(wd, filecode, struct_id, lb) \
writelist_nr(wd, filecode, SDNA_TYPE_FROM_STRUCT(struct_id), lb)
-/* *************** writing some direct data structs used in more code parts
**************** */
-/*These functions are used by blender's .blend system for file
saving/loading.*/
+/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name Typed DNA File Writing
+ *
+ * These functions are used by blender's .blend system for file saving/loading.
+ * \{ */
+
void IDP_WriteProperty_OnlyData(const IDProperty *prop, void *wd);
void IDP_WriteProperty(const IDProperty *prop, void *wd);
@@ -3790,6 +3818,12 @@ static void write_thumb(WriteData *wd, const
BlendThumbnail *thumb)
}
}
+/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name File Writing (Private)
+ * \{ */
+
/* if MemFile * there's filesave to memory */
static bool write_file_handle(
Main *mainvar,
@@ -3804,7 +3838,7 @@ static bool write_file_handle(
blo_split_main(&mainlist, mainvar);
- wd = bgnwrite(ww, compare, current);
+ wd = mywrite_begin(ww, compare, current);
#ifdef USE_BMESH_SAVE_AS_COMPAT
wd->use_mesh_compat = (write_flags & G_FILE_MESH_COMPAT) != 0;
@@ -3994,7 +4028,7 @@ static bool write_file_handle(
blo_join_main(&mainlist);
- return endwrite(wd);
+ return mywrite_end(wd);
}
/* do reverse file history: .blend1 -> .blend2, .blend -> .blend1 */
@@ -4039,6 +4073,12 @@ static bool do_history(const char *name, ReportList
*reports)
return 0;
}
+/** \} */
+
+/* -------------------------------------------------------------------- */
+/** \name File Writing (Public)
+ * \{ */
+
/**
* \return Success.
*/
@@ -4152,3 +4192,5 @@ bool BLO_write_file_mem(Main *mainvar, MemFile *compare,
MemFile *current, int w
return (err == 0);
}
+
+/** \} */
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