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Pay off more technical debt

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This makes breaking changes to add underscores to many non-standard
function names provided by the c library. MODE=tiny is now tinier and
we now use smaller locks that are better for tiny apps in this mode.
Some headers have been renamed to be in the same folder as the build
package, so it'll be easier to know which build dependency is needed.
Certain old misguided interfaces have been removed. Intel intrinsics
headers are now listed in libc/isystem (but not in the amalgamation)
to help further improve open source compatibility. Header complexity
has also been reduced. Lastly, more shell scripts are now available.
This commit is contained in:
Justine Tunney 2022-09-12 23:10:38 -07:00
parent b69f3d2488
commit 6f7d0cb1c3
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GPG key ID: BE714B4575D6E328
960 changed files with 4072 additions and 4873 deletions
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20
libc/mem/arena.c
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@ -19,6 +19,8 @@
#include "libc/assert.h"
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/intrin/bsf.h"
#include "libc/intrin/bsr.h"
#include "libc/intrin/likely.h"
#include "libc/intrin/weaken.h"
#include "libc/limits.h"
@ -26,8 +28,6 @@
#include "libc/macros.internal.h"
#include "libc/mem/arena.h"
#include "libc/mem/hook/hook.internal.h"
#include "libc/nexgen32e/bsf.h"
#include "libc/nexgen32e/bsr.h"
#include "libc/runtime/memtrack.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
@ -39,7 +39,7 @@
#define SIZE 0x2ff80000
#define P(i) ((void *)(intptr_t)(i))
#define EXCHANGE(HOOK, SLOT) \
__arena_hook((intptr_t *)weaken(HOOK), (intptr_t *)(&(SLOT)))
__arena_hook((intptr_t *)_weaken(HOOK), (intptr_t *)(&(SLOT)))
static struct Arena {
bool once;
@ -58,7 +58,7 @@ static struct Arena {
} __arena;
static wontreturn void __arena_die(void) {
if (weaken(__die)) weaken(__die)();
if (_weaken(__die)) _weaken(__die)();
_exit(83);
}
@ -120,8 +120,8 @@ static dontinline bool __arena_grow(size_t offset, size_t request) {
} else {
enomem();
}
if (weaken(__oom_hook)) {
weaken(__oom_hook)(request);
if (_weaken(__oom_hook)) {
_weaken(__oom_hook)(request);
}
return false;
}
@ -165,7 +165,7 @@ static void *__arena_memalign(size_t a, size_t n) {
if (a <= sizeof(size_t)) {
return __arena_alloc(8, n);
} else {
return __arena_alloc(2ul << bsrl(a - 1), n);
return __arena_alloc(2ul << _bsrl(a - 1), n);
}
}
@ -190,7 +190,7 @@ static void *__arena_realloc(void *p, size_t n) {
if ((m = __arena_get_size(p)) >= n) {
return p;
} else if (n <= SIZE) {
z = 2ul << bsrl(n - 1);
z = 2ul << _bsrl(n - 1);
if (__arena.offset[__arena.depth] - m == (o = (intptr_t)p - BASE)) {
if (UNLIKELY(o + z > __arena.size)) {
if (o + z <= SIZE) {
@ -205,7 +205,7 @@ static void *__arena_realloc(void *p, size_t n) {
__arena.offset[__arena.depth] = o + z;
*(size_t *)((char *)p - sizeof(size_t)) = z;
return p;
} else if ((q = __arena_alloc(1ul << bsfl((intptr_t)p), z))) {
} else if ((q = __arena_alloc(1ul << _bsfl((intptr_t)p), z))) {
memmove(q, p, m);
return q;
} else {
@ -225,7 +225,7 @@ static void *__arena_realloc(void *p, size_t n) {
if (n <= 16) {
n = 16;
} else {
n = 2ul << bsrl(n - 1);
n = 2ul << _bsrl(n - 1);
}
return __arena_alloc(16, n);
}