Add debug log to cosmoaudio and add examples

examples/a440.c

@@ -0,0 +1,80 @@
+#if 0
+/*─────────────────────────────────────────────────────────────────╗
+│ To the extent possible under law, Justine Tunney has waived      │
+│ all copyright and related or neighboring rights to this file,    │
+│ as it is written in the following disclaimers:                   │
+│   • http://unlicense.org/                                        │
+│   • http://creativecommons.org/publicdomain/zero/1.0/            │
+╚─────────────────────────────────────────────────────────────────*/
+#endif
+#include <cosmoaudio.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+/**
+ * @fileoverview plays pure A.440 tone on speakers for 1 second
+ * @see https://en.wikipedia.org/wiki/A440_%28pitch_standard%29
+ */
+
+#define SAMPLING_RATE 44100
+#define WAVE_INTERVAL 440
+#define CHANNELS      2
+#define LOUDNESS      .3
+#define DEBUG_LOG     1
+
+int main() {
+
+  struct CosmoAudioOpenOptions cao = {0};
+  cao.sizeofThis = sizeof(struct CosmoAudioOpenOptions);
+  cao.deviceType = kCosmoAudioDeviceTypePlayback;
+  cao.sampleRate = SAMPLING_RATE;
+  cao.debugLog = DEBUG_LOG;
+  cao.channels = CHANNELS;
+
+  int status;
+  struct CosmoAudio *ca;
+  status = cosmoaudio_open(&ca, &cao);
+  if (status != COSMOAUDIO_SUCCESS) {
+    fprintf(stderr, "failed to open audio: %d\n", status);
+    return 1;
+  }
+
+  float buf[256 * CHANNELS];
+  for (int g = 0; g < SAMPLING_RATE;) {
+    int frames = 1;
+    status = cosmoaudio_poll(ca, NULL, &frames);
+    if (status != COSMOAUDIO_SUCCESS) {
+      fprintf(stderr, "failed to poll output: %d\n", status);
+      return 2;
+    }
+    if (frames > 256)
+      frames = 256;
+    if (frames > SAMPLING_RATE - g)
+      frames = SAMPLING_RATE - g;
+    for (int f = 0; f < frames; ++f) {
+      float t = (float)g++ / SAMPLING_RATE;
+      float s = sinf(2 * M_PIf * WAVE_INTERVAL * t);
+      for (int c = 0; c < CHANNELS; c++)
+        buf[f * CHANNELS + c] = s * LOUDNESS;
+    }
+    status = cosmoaudio_write(ca, buf, frames);
+    if (status != frames) {
+      fprintf(stderr, "failed to write output: %d\n", status);
+      return 3;
+    }
+  }
+
+  status = cosmoaudio_flush(ca);
+  if (status != COSMOAUDIO_SUCCESS) {
+    fprintf(stderr, "failed to flush output: %d\n", status);
+    return 4;
+  }
+
+  status = cosmoaudio_close(ca);
+  if (status != COSMOAUDIO_SUCCESS) {
+    fprintf(stderr, "failed to close audio: %d\n", status);
+    return 5;
+  }
+}

examples/blas.cc

@@ -14,16 +14,16 @@
 // PERFORMANCE OF THIS SOFTWARE.
 
 #include <unistd.h>
+#include <cassert>
 #include <cinttypes>
 #include <cmath>
 #include <cstdio>
 #include <cstdlib>
 #include <ctime>
-#include "libc/assert.h"
 
 // high performance high accuracy matrix multiplication in ansi c
 
-#define MATH __target_clones("avx512f,fma")
+#define MATH __target_clones("avx512f,fma,avx")
 
 namespace {
 namespace ansiBLAS {

examples/clear.c

@@ -7,7 +7,7 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
+#include <unistd.h>
 
 // clears teletypewriter display
 //

examples/crashreport.c

@@ -7,12 +7,7 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
-#include "libc/intrin/kprintf.h"
-#include "libc/math.h"
-#include "libc/runtime/runtime.h"
-#include "libc/runtime/symbols.internal.h"
-#include "libc/stdio/stdio.h"
+#include <cosmo.h>
 
 /**
  * @fileoverview How to print backtraces and cpu state on crash.

examples/date.c

@@ -7,18 +7,11 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
-#include "libc/calls/struct/timespec.h"
-#include "libc/intrin/kprintf.h"
-#include "libc/macros.h"
-#include "libc/nt/enum/timezoneid.h"
-#include "libc/nt/struct/timezoneinformation.h"
-#include "libc/nt/time.h"
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/thread/threads.h"
-#include "libc/time.h"
+#include <stdlib.h>
+#include <string.h>
+#include <threads.h>
+#include <time.h>
+#include <unistd.h>
 
 /**
  * @fileoverview High performance ISO-8601 timestamp formatter.
@@ -27,6 +20,8 @@
  * Consider using something like this instead for your loggers.
  */
 
+#define ABS(X) ((X) >= 0 ? (X) : -(X))
+
 char *GetTimestamp(void) {
   int x;
   struct timespec ts;

examples/dlopen.c

@@ -7,11 +7,9 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
-#include "libc/dlopen/dlfcn.h"
-#include "libc/fmt/itoa.h"
-#include "libc/nt/thunk/msabi.h"
-#include "libc/runtime/runtime.h"
+#include <cosmo.h>
+#include <dlfcn.h>
+#include <stdlib.h>
 
 /**
  * @fileoverview cosmopolitan dynamic runtime linking demo

examples/env.c

@@ -1,10 +1,21 @@
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
+#if 0
+/*─────────────────────────────────────────────────────────────────╗
+│ To the extent possible under law, Justine Tunney has waived      │
+│ all copyright and related or neighboring rights to this file,    │
+│ as it is written in the following disclaimers:                   │
+│   • http://unlicense.org/                                        │
+│   • http://creativecommons.org/publicdomain/zero/1.0/            │
+╚─────────────────────────────────────────────────────────────────*/
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+
+/**
+ * @fileoverview prints environment variables
+ */
 
 int main(int argc, char* argv[]) {
-  fprintf(stderr, "%s (%s)\n", argv[0], GetProgramExecutableName());
-  for (char** p = environ; *p; ++p) {
-    printf("%s\n", *p);
-  }
+  for (char** p = environ; *p; ++p)
+    puts(*p);
   return 0;
 }

examples/greenbean.c

@@ -23,8 +23,6 @@
 #include <sys/auxv.h>
 #include <sys/socket.h>
 #include <time.h>
-#include "libc/mem/leaks.h"
-#include "libc/runtime/runtime.h"
 
 /**
  * @fileoverview greenbean lightweight threaded web server

examples/hangman.c

@@ -36,14 +36,10 @@
  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-#include "libc/calls/calls.h"
-#include "libc/calls/struct/stat.h"
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/rand.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/time.h"
-#include "third_party/zlib/zlib.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <time.h>
 // clang-format off
 
 #define DICT "usr/share/dict/hangman"

examples/hello.c

@@ -7,9 +7,8 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/stdio/stdio.h"
+#include <stdio.h>
 
 int main() {
   printf("hello world\n");
-  return 0;
 }

examples/hello2.c

@@ -7,7 +7,7 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
+#include <unistd.h>
 
 int main() {
   write(1, "hello world\n", 12);

examples/localtime.c

@@ -1,15 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/time.h"
-
-int main(int argc, char *argv[]) {
-  int64_t t = 0;
-  localtime(&t);
-}

examples/loudness.c

@@ -0,0 +1,133 @@
+#if 0
+/*─────────────────────────────────────────────────────────────────╗
+│ To the extent possible under law, Justine Tunney has waived      │
+│ all copyright and related or neighboring rights to this file,    │
+│ as it is written in the following disclaimers:                   │
+│   • http://unlicense.org/                                        │
+│   • http://creativecommons.org/publicdomain/zero/1.0/            │
+╚─────────────────────────────────────────────────────────────────*/
+#endif
+#include <cosmoaudio.h>
+#include <math.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+/**
+ * @fileoverview prints ascii meter of microphone loudness
+ *
+ * 0. -60 dB is nearly silent, barely audible, even in a quiet room
+ * 1. -50 dB is very quiet background sounds
+ * 2. -40 dB is quiet ambient noise
+ * 3. -30 dB is clear but soft sounds
+ * 4. -20 dB is moderate volume, comfortable for extended listening
+ * 5. -10 dB is fairly loud, but not uncomfortable
+ * 6.  -6 dB is loud, but not at full volume
+ * 7.  -3 dB is very loud, approaching system limits
+ * 8.  -1 dB is extremely loud, just below maximum
+ * 9.  -0 dB is maximum volume without distortion
+ */
+
+#define SAMPLING_RATE     44100
+#define ASCII_METER_WIDTH 20
+#define FRAMES_PER_SECOND 30
+#define MIN_DECIBEL       -60
+#define MAX_DECIBEL       0
+#define DEBUG_LOG         1
+
+sig_atomic_t g_done;
+
+void on_signal(int sig) {
+  g_done = 1;
+}
+
+// computes root of mean squares
+double rms(float* p, int n) {
+  double s = 0;
+  for (int i = 0; i < n; ++i)
+    s += p[i] * p[i];
+  return sqrt(s / n);
+}
+
+// converts rms to decibel
+double rms_to_db(double rms) {
+  double db = 20 * log10(rms);
+  db = fmin(db, MAX_DECIBEL);
+  db = fmax(db, MIN_DECIBEL);
+  return db;
+}
+
+int main() {
+  signal(SIGINT, on_signal);
+
+  // how many samples should we process at once
+  int chunkFrames = SAMPLING_RATE / FRAMES_PER_SECOND;
+
+  // configure cosmo audio
+  struct CosmoAudioOpenOptions cao = {0};
+  cao.sizeofThis = sizeof(struct CosmoAudioOpenOptions);
+  cao.deviceType = kCosmoAudioDeviceTypeCapture;
+  cao.sampleRate = SAMPLING_RATE;
+  cao.bufferFrames = chunkFrames * 2;
+  cao.debugLog = DEBUG_LOG;
+  cao.channels = 1;
+
+  // connect to microphone
+  int status;
+  struct CosmoAudio* ca;
+  status = cosmoaudio_open(&ca, &cao);
+  if (status != COSMOAUDIO_SUCCESS) {
+    fprintf(stderr, "failed to open microphone: %d\n", status);
+    return 1;
+  }
+
+  // allocate memory for audio work area
+  float* chunk = malloc(chunkFrames * sizeof(float));
+  if (!chunk) {
+    fprintf(stderr, "out of memory\n");
+    return 1;
+  }
+
+  while (!g_done) {
+
+    // wait for full chunk of audio to become available
+    int need_in_frames = chunkFrames;
+    status = cosmoaudio_poll(ca, &need_in_frames, NULL);
+    if (status != COSMOAUDIO_SUCCESS) {
+      fprintf(stderr, "failed to poll microphone: %d\n", status);
+      return 2;
+    }
+
+    // read audio frames from microphone ring buffer
+    status = cosmoaudio_read(ca, chunk, chunkFrames);
+    if (status != chunkFrames) {
+      fprintf(stderr, "failed to read microphone: %d\n", status);
+      return 3;
+    }
+
+    // convert audio chunk to to ascii meter
+    char s[ASCII_METER_WIDTH + 1] = {0};
+    double db = rms_to_db(rms(chunk, chunkFrames));
+    double db_range = MAX_DECIBEL - MIN_DECIBEL;
+    int filled_length = (db - MIN_DECIBEL) / db_range * ASCII_METER_WIDTH;
+    for (int i = 0; i < ASCII_METER_WIDTH; ++i) {
+      if (i < filled_length) {
+        s[i] = '=';
+      } else {
+        s[i] = ' ';
+      }
+    }
+    printf("\r%s| %+6.2f dB", s, db);
+    fflush(stdout);
+  }
+  printf("\n");
+
+  // clean up resources
+  status = cosmoaudio_close(ca);
+  if (status != COSMOAUDIO_SUCCESS) {
+    fprintf(stderr, "failed to close microphone: %d\n", status);
+    return 5;
+  }
+  free(chunk);
+}

examples/ls.c

@@ -1,83 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/calls/calls.h"
-#include "libc/calls/struct/dirent.h"
-#include "libc/calls/struct/stat.h"
-#include "libc/log/check.h"
-#include "libc/mem/gc.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/sysv/consts/dt.h"
-#include "libc/sysv/consts/s.h"
-#include "libc/x/xasprintf.h"
-
-struct stat st;
-
-const char *TypeToString(uint8_t type) {
-  switch (type) {
-    case DT_UNKNOWN:
-      return "DT_UNKNOWN";
-    case DT_FIFO:
-      return "DT_FIFO";
-    case DT_CHR:
-      return "DT_CHR";
-    case DT_DIR:
-      return "DT_DIR";
-    case DT_BLK:
-      return "DT_BLK";
-    case DT_REG:
-      return "DT_REG";
-    case DT_LNK:
-      return "DT_LNK";
-    case DT_SOCK:
-      return "DT_SOCK";
-    default:
-      return "UNKNOWN";
-  }
-}
-
-void List(const char *path) {
-  DIR *d;
-  struct dirent *e;
-  const char *vpath;
-  if (strcmp(path, ".") == 0) {
-    vpath = "";
-  } else if (!endswith(path, "/")) {
-    vpath = gc(xasprintf("%s/", path));
-  } else {
-    vpath = path;
-  }
-  if (stat(path, &st) != -1) {
-    if (S_ISDIR(st.st_mode)) {
-      CHECK((d = opendir(path)));
-      while ((e = readdir(d))) {
-        printf("0x%016x 0x%016x %-10s %s%s\n", e->d_ino, e->d_off,
-               TypeToString(e->d_type), vpath, e->d_name);
-      }
-      closedir(d);
-    } else {
-      printf("%s\n", path);
-    }
-  } else {
-    fprintf(stderr, "not found: %s\n", path);
-  }
-}
-
-int main(int argc, char *argv[]) {
-  int i;
-  if (argc == 1) {
-    List(".");
-  } else {
-    for (i = 1; i < argc; ++i) {
-      List(argv[i]);
-    }
-  }
-  return 0;
-}

examples/nc.c

@@ -7,25 +7,16 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
-#include "libc/fmt/conv.h"
-#include "libc/log/log.h"
-#include "libc/macros.h"
-#include "libc/runtime/runtime.h"
-#include "libc/sock/sock.h"
-#include "libc/sock/struct/linger.h"
-#include "libc/sock/struct/pollfd.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/sysv/consts/af.h"
-#include "libc/sysv/consts/ipproto.h"
-#include "libc/sysv/consts/poll.h"
-#include "libc/sysv/consts/shut.h"
-#include "libc/sysv/consts/so.h"
-#include "libc/sysv/consts/sock.h"
-#include "libc/sysv/consts/sol.h"
-#include "third_party/getopt/getopt.internal.h"
-#include "third_party/musl/netdb.h"
+#include <cosmo.h>
+#include <getopt.h>
+#include <netdb.h>
+#include <poll.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+// clang-format off
 
 /**
  * @fileoverview netcat clone
@@ -36,12 +27,14 @@
  * Here's an example usage:
  *
  *     make -j8 o//examples/nc.com
- *     printf 'GET /\r\nHost: justine.lol\r\n\r\n' | o//examples/nc.com
- * justine.lol 80
+ *     printf 'GET /\r\nHost: justine.lol\r\n\r\n' | o//examples/nc.com justine.lol 80
  *
- * Once upon time we called this command "telnet"
+ * Once upon time we called this command basically "telnet"
  */
 
+#define ARRAYLEN(A) \
+  ((sizeof(A) / sizeof(*(A))) / ((unsigned)!(sizeof(A) % sizeof(*(A)))))
+
 int main(int argc, char *argv[]) {
   ssize_t rc;
   size_t i, got;

examples/parsefloat.c

@@ -1,3 +1,12 @@
+#if 0
+/*─────────────────────────────────────────────────────────────────╗
+│ To the extent possible under law, Justine Tunney has waived      │
+│ all copyright and related or neighboring rights to this file,    │
+│ as it is written in the following disclaimers:                   │
+│   • http://unlicense.org/                                        │
+│   • http://creativecommons.org/publicdomain/zero/1.0/            │
+╚─────────────────────────────────────────────────────────────────*/
+#endif
 #include <stdio.h>
 
 #define PARSE_AND_PRINT(type, scan_fmt, print_fmt, str)      \

examples/pause.c

@@ -7,10 +7,10 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
-#include "libc/calls/struct/sigaction.h"
-#include "libc/fmt/itoa.h"
-#include "libc/str/str.h"
+#include <signal.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
 
 volatile int g_sig;
 
@@ -21,16 +21,13 @@ void OnSig(int sig) {
 int main(int argc, char *argv[]) {
 
   // listen for all signals
-  for (int sig = 1; sig <= NSIG; ++sig) {
+  for (int sig = 1; sig <= NSIG; ++sig)
     signal(sig, OnSig);
-  }
 
   // wait for a signal
-  char ibuf[12];
-  FormatInt32(ibuf, getpid());
-  tinyprint(2, "waiting for signal to be sent to ", ibuf, "\n", NULL);
+  printf("waiting for signal to be sent to my pid %d\n", getpid());
   pause();
 
   // report the signal
-  tinyprint(1, "got ", strsignal(g_sig), "\n", NULL);
+  printf("got %s\n", strsignal(g_sig));
 }

examples/picol.c

@@ -32,12 +32,9 @@
  * . Formatted as per Cosmopolitan's standards.
  */
 
-#include "libc/fmt/conv.h"
-#include "libc/log/log.h"
-#include "libc/mem/mem.h"
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 enum { PICOL_OK, PICOL_ERR, PICOL_RETURN, PICOL_BREAK, PICOL_CONTINUE };
 enum { PT_ESC, PT_STR, PT_CMD, PT_VAR, PT_SEP, PT_EOL, PT_EOF };

examples/printargs.c

@@ -7,7 +7,7 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/runtime/runtime.h"
+#include <cosmo.h>
 
 int main() {
   __printargs("");

examples/romanize.c

@@ -13,11 +13,11 @@
 // TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 // PERFORMANCE OF THIS SOFTWARE.
 
+#include <ctype.h>
 #include <stdio.h>
 #include <string.h>
 #include <wchar.h>
 #include <wctype.h>
-#include "libc/ctype.h"
 
 /**
  * @fileoverview Roman Transliteration, e.g.

examples/script.c

@@ -29,29 +29,20 @@
 │ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF       │
 │ SUCH DAMAGE.                                                                 │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/calls/calls.h"
-#include "libc/calls/struct/iovec.h"
-#include "libc/calls/struct/stat.h"
-#include "libc/calls/struct/termios.h"
-#include "libc/calls/struct/timeval.h"
-#include "libc/calls/struct/winsize.h"
-#include "libc/calls/termios.h"
-#include "libc/calls/weirdtypes.h"
-#include "libc/errno.h"
-#include "libc/fmt/conv.h"
-#include "libc/intrin/bswap.h"
-#include "libc/log/bsd.h"
-#include "libc/macros.h"
-#include "libc/mem/mem.h"
-#include "libc/paths.h"
-#include "libc/runtime/runtime.h"
-#include "libc/sock/select.h"
-#include "libc/stdio/stdio.h"
-#include "libc/sysv/consts/fileno.h"
-#include "libc/sysv/consts/s.h"
-#include "libc/sysv/consts/termios.h"
-#include "libc/time.h"
-#include "third_party/getopt/getopt.internal.h"
+#include <err.h>
+#include <errno.h>
+#include <paths.h>
+#include <pty.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#include <termios.h>
+#include <time.h>
+#include <unistd.h>
 // clang-format off
 
 /**

examples/seq.c

@@ -7,9 +7,8 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
-#include "libc/fmt/conv.h"
-#include "libc/fmt/itoa.h"
+#include <cosmo.h>
+#include <stdlib.h>
 
 /**
  * @fileoverview Prints sequence of numbers.

examples/setcontext.c

@@ -7,12 +7,9 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
-#include "libc/calls/ucontext.h"
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/sysv/consts/exit.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <ucontext.h>
 
 /**
  * @fileoverview swapcontext() and makecontext() example
@@ -33,18 +30,16 @@ static ucontext_t uctx_func2;
 static void func1(void) {
   say("func1: started\n");
   say("func1: swapcontext(&uctx_func1, &uctx_func2)\n");
-  if (swapcontext(&uctx_func1, &uctx_func2) == -1) {
+  if (swapcontext(&uctx_func1, &uctx_func2) == -1)
     handle_error("swapcontext");
-  }
   say("func1: returning\n");
 }
 
 static void func2(void) {
   say("func2: started\n");
   say("func2: swapcontext(&uctx_func2, &uctx_func1)\n");
-  if (swapcontext(&uctx_func2, &uctx_func1) == -1) {
+  if (swapcontext(&uctx_func2, &uctx_func1) == -1)
     handle_error("swapcontext");
-  }
   say("func2: returning\n");
 }
 
@@ -52,17 +47,15 @@ int main(int argc, char *argv[]) {
   char func1_stack[8192];
   char func2_stack[8192];
 
-  if (getcontext(&uctx_func1) == -1) {
+  if (getcontext(&uctx_func1) == -1)
     handle_error("getcontext");
-  }
   uctx_func1.uc_stack.ss_sp = func1_stack;
   uctx_func1.uc_stack.ss_size = sizeof(func1_stack);
   uctx_func1.uc_link = &uctx_main;
   makecontext(&uctx_func1, func1, 0);
 
-  if (getcontext(&uctx_func2) == -1) {
+  if (getcontext(&uctx_func2) == -1)
     handle_error("getcontext");
-  }
   uctx_func2.uc_stack.ss_sp = func2_stack;
   uctx_func2.uc_stack.ss_size = sizeof(func2_stack);
   /* Successor context is f1(), unless argc > 1 */
@@ -70,9 +63,8 @@ int main(int argc, char *argv[]) {
   makecontext(&uctx_func2, func2, 0);
 
   say("main: swapcontext(&uctx_main, &uctx_func2)\n");
-  if (swapcontext(&uctx_main, &uctx_func2) == -1) {
+  if (swapcontext(&uctx_main, &uctx_func2) == -1)
     handle_error("swapcontext");
-  }
 
   say("main: exiting\n");
   exit(EXIT_SUCCESS);

examples/setitimer.c

@@ -7,17 +7,15 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/assert.h"
-#include "libc/calls/calls.h"
-#include "libc/calls/struct/itimerval.h"
-#include "libc/calls/struct/sigaction.h"
-#include "libc/calls/struct/siginfo.h"
-#include "libc/calls/ucontext.h"
-#include "libc/stdio/stdio.h"
-#include "libc/sysv/consts/itimer.h"
-#include "libc/sysv/consts/sa.h"
-#include "libc/sysv/consts/sig.h"
-#include "libc/time.h"
+#include <assert.h>
+#include <signal.h>
+#include <stdio.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+/**
+ * @fileoverview interval timer tutorial
+ */
 
 volatile bool gotalrm;
 

examples/spawn_bench.c

@@ -7,24 +7,20 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/atomic.h"
-#include "libc/calls/calls.h"
-#include "libc/calls/struct/timespec.h"
-#include "libc/calls/weirdtypes.h"
-#include "libc/mem/mem.h"
-#include "libc/proc/posix_spawn.h"
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/sysv/consts/clock.h"
-#include "libc/sysv/consts/map.h"
-#include "libc/sysv/consts/prot.h"
+#include <spawn.h>
+#include <stdalign.h>
+#include <stdatomic.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <time.h>
 
 #define ITERATIONS 10
 
-_Alignas(128) int a;
-_Alignas(128) int b;
-_Alignas(128) atomic_int lock;
+alignas(128) int a;
+alignas(128) int b;
+alignas(128) atomic_int lock;
 
 static struct timespec SubtractTime(struct timespec a, struct timespec b) {
   a.tv_sec -= b.tv_sec;

examples/stat.c

@@ -7,19 +7,12 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/struct/stat.h"
-#include "libc/assert.h"
-#include "libc/calls/calls.h"
-#include "libc/errno.h"
-#include "libc/fmt/conv.h"
-#include "libc/log/check.h"
-#include "libc/log/log.h"
-#include "libc/mem/gc.h"
-#include "libc/mem/mem.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/sysv/consts/s.h"
-#include "libc/time.h"
+#include <assert.h>
+#include <cosmo.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <time.h>
 
 /**
  * @fileoverview File metadata viewer.
@@ -72,9 +65,15 @@ void PrintFileMetadata(const char *pathname, struct stat *st) {
   printf("\n%s:", pathname);
   if (numeric) {
     fd = atoi(pathname);
-    CHECK_NE(-1, fstat(fd, st), "fd=%d", fd);
+    if (fstat(fd, st)) {
+      perror(pathname);
+      exit(1);
+    }
   } else {
-    CHECK_NE(-1, stat(pathname, st), "pathname=%s", pathname);
+    if (stat(pathname, st)) {
+      perror(pathname);
+      exit(1);
+    }
   }
   printf("\n"
          "%-32s%,ld\n"

examples/statfs.c

@@ -7,18 +7,19 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/struct/statfs.h"
-#include "libc/dce.h"
-#include "libc/fmt/conv.h"
-#include "libc/log/check.h"
 #include "libc/nt/enum/statfs.h"
-#include "libc/stdio/stdio.h"
-#include "libc/sysv/consts/st.h"
+#include <cosmo.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/vfs.h>
 
-dontinline void ShowIt(const char *path) {
+void ShowIt(const char *path) {
   char ibuf[21];
   struct statfs sf = {0};
-  CHECK_NE(-1, statfs(path, &sf));
+  if (statfs(path, &sf)) {
+    perror(path);
+    exit(1);
+  }
 
   printf("filesystem %s\n", path);
   printf("f_type    = %#x (%s)\n", sf.f_type, sf.f_fstypename);

examples/stringbuffer.c

@@ -1,36 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/calls/calls.h"
-#include "libc/log/check.h"
-#include "libc/mem/mem.h"
-#include "libc/stdio/append.h"
-#include "libc/str/str.h"
-
-/**
- * @fileoverview Fast Growable Strings Tutorial
- */
-
-int main(int argc, char *argv[]) {
-  char *b = 0;
-  appendf(&b, "hello ");  // guarantees nul terminator
-  CHECK_EQ(6, strlen(b));
-  CHECK_EQ(6, appendz(b).i);
-  appendf(&b, " world\n");
-  CHECK_EQ(13, strlen(b));
-  CHECK_EQ(13, appendz(b).i);
-  appendd(&b, "\0", 1);  // supports binary
-  CHECK_EQ(13, strlen(b));
-  CHECK_EQ(14, appendz(b).i);
-  appendf(&b, "%d arg%s\n", argc, argc == 1 ? "" : "s");
-  appendf(&b, "%s\n", "have a nice day");
-  write(1, b, appendz(b).i);
-  free(b);
-  return 0;
-}

examples/sysconf.c

@@ -7,8 +7,8 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/runtime/sysconf.h"
-#include "libc/stdio/stdio.h"
+#include <stdio.h>
+#include <unistd.h>
 
 #define SYSCONF(NAME) printf("%-24s %,ld\n", #NAME, sysconf(NAME))
 

examples/sysinfo.c

@@ -7,19 +7,19 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/struct/sysinfo.h"
-#include "libc/calls/struct/timespec.h"
-#include "libc/fmt/conv.h"
-#include "libc/fmt/itoa.h"
-#include "libc/log/check.h"
-#include "libc/stdio/stdio.h"
-#include "libc/sysv/consts/clock.h"
+#include <cosmo.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/sysinfo.h>
 
 int main(int argc, char *argv[]) {
   int64_t x;
   char ibuf[21];
   struct sysinfo si;
-  CHECK_NE(-1, sysinfo(&si));
+  if (sysinfo(&si)) {
+    perror("sysinfo");
+    exit(1);
+  }
 
   printf("%-16s", "uptime");
   x = si.uptime / (24 * 60 * 60);

examples/system.c

@@ -7,9 +7,7 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/calls/calls.h"
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
+#include <stdlib.h>
 
 /**
  * @fileoverview Cosmopolitan Command Interpreter Demo