walkero
/
harfbuzz
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Move some blob functions to methods

This commit is contained in:
Behdad Esfahbod 2018-05-03 22:14:54 -04:00
parent 5c64d61475
commit 90baf72197
1 changed files with 34 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
src/hb-blob.cc
View File

@ -49,18 +49,6 @@
static bool _try_writable (hb_blob_t *blob);
static void
_hb_blob_destroy_user_data (hb_blob_t *blob)
{
if (blob->destroy) {
blob->destroy (blob->user_data);
blob->user_data = nullptr;
blob->destroy = nullptr;
}
}
/**
* hb_blob_create: (skip)
* @data: Pointer to blob data.
@ -103,7 +91,7 @@ hb_blob_create (const char *data,
if (blob->mode == HB_MEMORY_MODE_DUPLICATE) {
blob->mode = HB_MEMORY_MODE_READONLY;
if (!_try_writable (blob)) {
if (!blob->try_make_writable ()) {
hb_blob_destroy (blob);
return hb_blob_get_empty ();
}
@ -249,7 +237,7 @@ hb_blob_destroy (hb_blob_t *blob)
{
if (!hb_object_destroy (blob)) return;
_hb_blob_destroy_user_data (blob);
blob->fini_shallow ();
free (blob);
}
@ -384,7 +372,7 @@ hb_blob_get_data (hb_blob_t *blob, unsigned int *length)
char *
hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length)
{
if (!_try_writable (blob)) {
if (!blob->try_make_writable ()) {
if (length)
*length = 0;
@ -398,8 +386,8 @@ hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length)
}
static hb_bool_t
_try_make_writable_inplace_unix (hb_blob_t *blob)
bool
hb_blob_t::try_make_writable_inplace_unix (void)
{
#if defined(HAVE_SYS_MMAN_H) && defined(HAVE_MPROTECT)
uintptr_t pagesize = -1, mask, length;
@ -414,25 +402,25 @@ _try_make_writable_inplace_unix (hb_blob_t *blob)
#endif
if ((uintptr_t) -1L == pagesize) {
DEBUG_MSG_FUNC (BLOB, blob, "failed to get pagesize: %s", strerror (errno));
DEBUG_MSG_FUNC (BLOB, this, "failed to get pagesize: %s", strerror (errno));
return false;
}
DEBUG_MSG_FUNC (BLOB, blob, "pagesize is %lu", (unsigned long) pagesize);
DEBUG_MSG_FUNC (BLOB, this, "pagesize is %lu", (unsigned long) pagesize);
mask = ~(pagesize-1);
addr = (const char *) (((uintptr_t) blob->data) & mask);
length = (const char *) (((uintptr_t) blob->data + blob->length + pagesize-1) & mask) - addr;
DEBUG_MSG_FUNC (BLOB, blob,
addr = (const char *) (((uintptr_t) this->data) & mask);
length = (const char *) (((uintptr_t) this->data + this->length + pagesize-1) & mask) - addr;
DEBUG_MSG_FUNC (BLOB, this,
"calling mprotect on [%p..%p] (%lu bytes)",
addr, addr+length, (unsigned long) length);
if (-1 == mprotect ((void *) addr, length, PROT_READ | PROT_WRITE)) {
DEBUG_MSG_FUNC (BLOB, blob, "mprotect failed: %s", strerror (errno));
DEBUG_MSG_FUNC (BLOB, this, "mprotect failed: %s", strerror (errno));
return false;
}
blob->mode = HB_MEMORY_MODE_WRITABLE;
this->mode = HB_MEMORY_MODE_WRITABLE;
DEBUG_MSG_FUNC (BLOB, blob,
DEBUG_MSG_FUNC (BLOB, this,
"successfully made [%p..%p] (%lu bytes) writable\n",
addr, addr+length, (unsigned long) length);
return true;
@ -441,53 +429,53 @@ _try_make_writable_inplace_unix (hb_blob_t *blob)
#endif
}
static bool
_try_writable_inplace (hb_blob_t *blob)
bool
hb_blob_t::try_make_writable_inplace (void)
{
DEBUG_MSG_FUNC (BLOB, blob, "making writable inplace\n");
DEBUG_MSG_FUNC (BLOB, this, "making writable inplace\n");
if (_try_make_writable_inplace_unix (blob))
if (this->try_make_writable_inplace_unix ())
return true;
DEBUG_MSG_FUNC (BLOB, blob, "making writable -> FAILED\n");
DEBUG_MSG_FUNC (BLOB, this, "making writable -> FAILED\n");
/* Failed to make writable inplace, mark that */
blob->mode = HB_MEMORY_MODE_READONLY;
this->mode = HB_MEMORY_MODE_READONLY;
return false;
}
static bool
_try_writable (hb_blob_t *blob)
bool
hb_blob_t::try_make_writable (void)
{
if (blob->immutable)
if (this->immutable)
return false;
if (blob->mode == HB_MEMORY_MODE_WRITABLE)
if (this->mode == HB_MEMORY_MODE_WRITABLE)
return true;
if (blob->mode == HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE && _try_writable_inplace (blob))
if (this->mode == HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE && this->try_make_writable_inplace ())
return true;
if (blob->mode == HB_MEMORY_MODE_WRITABLE)
if (this->mode == HB_MEMORY_MODE_WRITABLE)
return true;
DEBUG_MSG_FUNC (BLOB, blob, "current data is -> %p\n", blob->data);
DEBUG_MSG_FUNC (BLOB, this, "current data is -> %p\n", this->data);
char *new_data;
new_data = (char *) malloc (blob->length);
new_data = (char *) malloc (this->length);
if (unlikely (!new_data))
return false;
DEBUG_MSG_FUNC (BLOB, blob, "dupped successfully -> %p\n", blob->data);
DEBUG_MSG_FUNC (BLOB, this, "dupped successfully -> %p\n", this->data);
memcpy (new_data, blob->data, blob->length);
_hb_blob_destroy_user_data (blob);
blob->mode = HB_MEMORY_MODE_WRITABLE;
blob->data = new_data;
blob->user_data = new_data;
blob->destroy = free;
memcpy (new_data, this->data, this->length);
this->destroy_user_data ();
this->mode = HB_MEMORY_MODE_WRITABLE;
this->data = new_data;
this->user_data = new_data;
this->destroy = free;
return true;
}