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Reduce stack virtual memory consumption on Linux

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This commit is contained in:
Justine Tunney 2024-12-25 19:43:43 -08:00
parent cc8a9eb93c
commit 36e5861b0c
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GPG key ID: BE714B4575D6E328
31 changed files with 583 additions and 166 deletions
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20
examples/stackexplorer.c
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@ -7,9 +7,13 @@
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "libc/dce.h"
#include "libc/intrin/maps.h"
#include "libc/mem/alg.h"
#include "libc/mem/mem.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/stack.h"
#include "libc/runtime/winargs.internal.h"
#include "libc/stdio/stdio.h"
#include "libc/x/xasprintf.h"
@ -67,8 +71,18 @@ int main(int argc, char *argv[]) {
Append((uintptr_t)&__auxv[i + 1],
xasprintf("&auxv[%d] = %#lx", i + 1, __auxv[i + 1]));
}
qsort(things.p, things.n, sizeof(*things.p), Compare);
for (int i = 0; i < things.n; ++i) {
printf("%012lx %s\n", things.p[i].i, things.p[i].s);
if (!IsWindows()) {
struct AddrSize stak = __get_main_stack();
Append((intptr_t)stak.addr + stak.size, "top of stack");
Append((intptr_t)stak.addr, "bottom of stack");
} else {
#ifdef __x86_64__
Append(GetStaticStackAddr(0) + GetStaticStackSize(), "top of stack");
Append(GetStaticStackAddr(0) + GetGuardSize(), "bottom of stack");
Append(GetStaticStackAddr(0), "bottom of guard region");
#endif
}
qsort(things.p, things.n, sizeof(*things.p), Compare);
for (int i = 0; i < things.n; ++i)
printf("%012lx %s\n", things.p[i].i, things.p[i].s);
}