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Get Redbean fork() working on the New Technology

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Now that we have understandable system call tracing on Windows, this
change rewrites many of the polyfill internals for that platform, to
help things get closer to tip top shape. Support for complex forking
scenarios had been in a regressed state for quite some time. Now, it
works! Subsequent changes should be able to address the performance.
This commit is contained in:
Justine Tunney 2022-03-20 08:01:14 -07:00
parent efedef6e65
commit 0cb6b6ff4b
84 changed files with 1340 additions and 338 deletions
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5
libc/runtime/memtrack.c
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@ -71,6 +71,7 @@ static noasan bool ExtendMemoryIntervals(struct MemoryIntervals *mm) {
base = (char *)kMemtrackStart;
prot = PROT_READ | PROT_WRITE;
flags = MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED;
/* TODO(jart): These map handles should not leak across NT fork() */
if (mm->p == mm->s) {
if (IsAsan()) {
shad = (char *)(((intptr_t)base >> 3) + 0x7fff8000);
@ -170,7 +171,7 @@ noasan int ReleaseMemoryIntervals(struct MemoryIntervals *mm, int x, int y,
}
noasan int TrackMemoryInterval(struct MemoryIntervals *mm, int x, int y, long h,
int prot, int flags) {
int prot, int flags, long offset, long size) {
/* asan runtime depends on this function */
unsigned i;
assert(y >= x);
@ -194,6 +195,8 @@ noasan int TrackMemoryInterval(struct MemoryIntervals *mm, int x, int y, long h,
mm->p[i].h = h;
mm->p[i].prot = prot;
mm->p[i].flags = flags;
mm->p[i].offset = offset;
mm->p[i].size = size;
}
return 0;
}