mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-02 17:28:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Optimize memory layout

Browse source
This commit is contained in:
Justine Tunney 2022-09-12 04:19:32 -07:00
parent 0305194d98
commit b69f3d2488
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
41 changed files with 383 additions and 347 deletions
Download patch file Download diff file Expand all files Collapse all files

20
libc/intrin/printmemoryintervals.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/fmt/conv.h"
#include "libc/fmt/itoa.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/intrin/kprintf.h"
@ -34,28 +35,26 @@ static bool IsNoteworthyHole(unsigned i, const struct MemoryIntervals *mm) {
}
void PrintMemoryIntervals(int fd, const struct MemoryIntervals *mm) {
char *p, mappingbuf[8], framebuf[32];
long i, w, frames, maptally = 0, gaptally = 0;
char *p, mappingbuf[8], framebuf[64], sb[16];
long i, w, frames, maptally = 0;
for (w = i = 0; i < mm->i; ++i) {
w = MAX(w, LengthInt64Thousands(mm->p[i].y + 1 - mm->p[i].x));
}
for (i = 0; i < mm->i; ++i) {
frames = mm->p[i].y + 1 - mm->p[i].x;
maptally += frames;
kprintf("%08x-%08x %s %'*ldx%s", mm->p[i].x, mm->p[i].y,
kprintf("%08x-%08x %s %'*ldx %s", mm->p[i].x, mm->p[i].y,
(DescribeMapping)(mappingbuf, mm->p[i].prot, mm->p[i].flags), w,
frames, (DescribeFrame)(framebuf, mm->p[i].x));
if (mm->p[i].iscow) kprintf(" cow");
if (mm->p[i].readonlyfile) kprintf(" readonlyfile");
if (mm->p[i].size !=
(size_t)(mm->p[i].y - mm->p[i].x) * FRAMESIZE + FRAMESIZE) {
kprintf(" size=%'zu", mm->p[i].size);
}
sizefmt(sb, mm->p[i].size, 1024);
kprintf(" %sB", sb);
if (i + 1 < mm->i) {
frames = mm->p[i + 1].x - mm->p[i].y - 1;
if (frames && IsNoteworthyHole(i, mm)) {
gaptally += frames;
kprintf(" w/ %'ld frame hole", frames);
sizefmt(sb, frames * FRAMESIZE, 1024);
kprintf(" w/ %sB hole", sb);
}
}
if (mm->p[i].h != -1) {
@ -63,5 +62,6 @@ void PrintMemoryIntervals(int fd, const struct MemoryIntervals *mm) {
}
kprintf("\n");
}
kprintf("# %ld frames mapped w/ %'ld frames gapped\n", maptally, gaptally);
sizefmt(sb, maptally * FRAMESIZE, 1024);
kprintf("# %sB total mapped memory\n", sb);
}