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Free the mapped file early if possible

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Kovid Goyal 2017-09-28 16:58:28 +05:30
parent ef91f9dc8f
commit 898136dbdc
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GPG key ID: 06BC317B515ACE7C
1 changed files with 6 additions and 3 deletions
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9
kitty/graphics.c
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@ -137,11 +137,10 @@ static inline bool
mmap_img_file(GraphicsManager UNUSED *self, Image *img) {
struct stat s;
if (fstat(img->load_data.fd, &s) != 0) ABRT(EBADF, "Failed to fstat() SHM file with error: [%d] %s", errno, strerror(errno));
off_t file_sz = s.st_size;
void *addr = mmap(0, file_sz, PROT_READ, MAP_PRIVATE, img->load_data.fd, 0);
void *addr = mmap(0, s.st_size, PROT_READ, MAP_PRIVATE, img->load_data.fd, 0);
if (addr == MAP_FAILED) ABRT(EBADF, "Failed to map image file with error: [%d] %s", errno, strerror(errno));
img->load_data.mapped_file = addr;
img->load_data.mapped_file_sz = file_sz;
img->load_data.mapped_file_sz = s.st_size;
return true;
err:
return false;
@ -378,6 +377,10 @@ handle_add_command(GraphicsManager *self, const GraphicsCommand *g, const uint8_
ABRT(ENODATA, "Insufficient image data: %zu < %zu", img->load_data.buf_used, img->load_data.data_sz);
img->data_loaded = false;
}
if (img->load_data.mapped_file) {
munmap(img->load_data.mapped_file, img->load_data.mapped_file_sz);
img->load_data.mapped_file = NULL; img->load_data.mapped_file_sz = 0;
}
} else {
if (tt == 'd') {
if (img->load_data.buf_used < img->load_data.data_sz) {