mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-23 05:42:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Rewrite ZipOS

Browse source 
This reduces the virtual memory usage of Emacs for me by 30%. We now
have a simpler implementation that uses read(), rather mmap()ing the
whole executable.
This commit is contained in:
Justine Tunney 2023-10-03 07:27:25 -07:00
parent ff77f2a6af
commit b01282e23e
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
21 changed files with 408 additions and 421 deletions
Download patch file Download diff file Expand all files Collapse all files

19
libc/runtime/zipos-close.c
View file

@ -16,6 +16,7 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/state.internal.h"
#include "libc/calls/syscall-sysv.internal.h"
@ -30,16 +31,14 @@
* @vforksafe
*/
int __zipos_close(int fd) {
int rc;
struct ZiposHandle *h;
h = (struct ZiposHandle *)(intptr_t)g_fds.p[fd].handle;
if (!IsWindows()) {
rc = sys_close(fd);
} else {
rc = 0; // no system file descriptor needed on nt
}
if (!__vforked) {
__zipos_free(h);
if (__vforked) {
sys_close(fd);
return 0;
}
struct ZiposHandle *h = (struct ZiposHandle *)(intptr_t)g_fds.p[fd].handle;
g_fds.p[fd].handle = h->handle;
g_fds.p[fd].kind = kFdFile;
int rc = close(fd);
__zipos_free(h);
return rc;
}