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Make malloc scalable on all platforms

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It turns out sched_getcpu() didn't work on many platforms. So the system
call now has tests and is well documented. We now employ new workarounds
on platforms where it isn't supported in our malloc() implementation. It
was previously the case that malloc() was only scalable on Linux/Windows
for x86-64. Now the other platforms are scalable too.
This commit is contained in:
Justine Tunney 2024-08-15 21:32:30 -07:00
parent 3fd275f59f
commit 0a79c6961f
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GPG key ID: BE714B4575D6E328
9 changed files with 459 additions and 99 deletions
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libc/runtime/syslib.internal.h
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@ -82,6 +82,7 @@ struct Syslib {
char *(*__dlerror)(void);
/* v9 (2024-01-31) */
int (*__pthread_cpu_number_np)(size_t *);
/* v10 (2024-05-02) */
long (*__sysctl)(int *, unsigned, void *, size_t *, void *, size_t);
long (*__sysctlbyname)(const char *, void *, size_t *, void *, size_t);
long (*__sysctlnametomib)(const char *, int *, size_t *);