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Improve locks and signals

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- Introduce fast spinlock API
- Double rand64() perf w/ spinlock
- Improve raise() on New Technology
- Support gettid() across platforms
- Implement SA_NODEFER on New Technology
- Move the lock intrinsics into LIBC_INTRIN
- Make SIGTRAP recoverable on New Technology
- Block SIGCHLD in wait4() on New Technology
- Add threading prototypes for XNU and FreeBSD
- Rewrite abort() fixing its minor bugs on XNU/NT
- Shave down a lot of the content in libc/bits/bits.h
- Let signal handlers modify CPU registers on New Technology
This commit is contained in:
Justine Tunney 2022-04-12 05:20:17 -07:00
parent f68f1789bd
commit 046c7ebd4a
110 changed files with 1514 additions and 876 deletions
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83
test/dsp/core/float2short_test.c
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "dsp/core/core.h"
#include "dsp/mpeg/mpeg.h"
#include "libc/log/check.h"
#include "libc/macros.internal.h"
#include "libc/rand/rand.h"
#include "libc/runtime/buffer.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
short pcm[8][8];
float binary32[8][8];
struct GuardedBuffer b1, b2;
TEST(float2short, test) {
binary32[0][0] = -0.5;
binary32[0][1] = 0.0;
binary32[0][2] = 0.5;
float2short(8, pcm, binary32);
EXPECT_EQ(-16384, pcm[0][0]);
EXPECT_EQ(0, pcm[0][1]);
EXPECT_EQ(16384, pcm[0][2]);
}
TEST(float2short, testOverflow) {
binary32[0][0] = -1.1;
binary32[0][1] = -1.0;
binary32[0][2] = 1.0;
binary32[0][3] = 1.1;
float2short(8, pcm, binary32);
EXPECT_EQ(-32768, pcm[0][0]);
EXPECT_EQ(-32768, pcm[0][1]);
EXPECT_EQ(32767, pcm[0][2]);
EXPECT_EQ(32767, pcm[0][3]);
}
void unclamped(size_t n, short pcm16[n][8], const float binary32[n][8]) {
size_t i, j;
for (i = 0; i < n; ++i) {
for (j = 0; j < 8; ++j) {
pcm16[i][j] = binary32[i][j] * 32768;
}
}
}
plm_samples_t samps;
void randomizeaudio(void) {
size_t i;
for (i = 0; i < ARRAYLEN(samps.interleaved); ++i) {
samps.interleaved[i] = randf();
}
}
void float2short_pure(void) {
float2short(ARRAYLEN(samps.interleaved) / 8, pcm, (void *)samps.interleaved);
}
void float2short_unclamped(void) {
unclamped(ARRAYLEN(samps.interleaved) / 8, pcm, (void *)samps.interleaved);
}
BENCH(float2short, audioframe) {
EZBENCH(randomizeaudio(), float2short_pure());
EZBENCH(randomizeaudio(), float2short_unclamped());
}