Unify stdio logging

Darwin now uses the same stdio logging implementation as other platforms.
Logs are colorized and contain timestamps.
On linux and darwin, pid and tid are also logged.

Author: mbknust

src/platform/logging/BUILD.gn

@@ -109,11 +109,7 @@ if (current_os == "android") {
 stdio_archive = "$root_out_dir/liblogging-stdio.a"
 
 source_set("stdio") {
-  if (chip_device_platform == "darwin") {
-    sources = [ "impl/stdio/darwin/Logging.cpp" ]
-  } else {
-    sources = [ "impl/stdio/Logging.cpp" ]
-  }
+  sources = [ "impl/stdio/Logging.cpp" ]
 
   deps = [
     ":headers",

src/platform/logging/impl/stdio/Logging.cpp

@@ -4,17 +4,64 @@
 
 #include <lib/support/logging/Constants.h>
 
+#include <inttypes.h>
 #include <stdio.h>
+#include <time.h>
+
+#if defined(__APPLE__)
+#include <pthread.h>
+#include <unistd.h>
+#elif defined(__gnu_linux__)
+#include <sys/syscall.h>
+#include <unistd.h>
+#endif
 
 namespace chip {
 namespace Logging {
 namespace Platform {
 
+// TODO: investigate whether pw_chrono or pw_log could be used here
 void LogV(const char * module, uint8_t category, const char * msg, va_list v)
 {
+#if defined(_POSIX_THREAD_SAFE_FUNCTIONS)
+    flockfile(stdout);
+#endif
+
+    switch (category)
+    {
+    case kLogCategory_Error:
+        printf("\033[1;31m");
+        break;
+    case kLogCategory_Progress:
+        printf("\033[0;32m");
+        break;
+    case kLogCategory_Detail:
+        printf("\033[0;34m");
+        break;
+    }
+
+#if defined(__APPLE__) || defined(__gnu_linux__)
+    timespec ts;
+    timespec_get(&ts, TIME_UTC);
+    printf("[%lld.%06ld] ", static_cast<long long>(ts.tv_sec), static_cast<long>(ts.tv_nsec / 1000));
+#endif
+
+#if defined(__APPLE__)
+    uint64_t ktid;
+    pthread_threadid_np(nullptr, &ktid);
+    printf("[%lld:%lld] ", static_cast<long long>(getpid()), static_cast<long long>(ktid));
+#elif defined(__gnu_linux__) && !defined(__NuttX__)
+    // TODO: change to getpid() and gettid() after glib upgrade
+    printf("[%lld:%lld] ", static_cast<long long>(syscall(SYS_getpid)), static_cast<long long>(syscall(SYS_gettid)));
+#endif
+
     printf("CHIP:%s: ", module);
     vprintf(msg, v);
-    printf("\n");
+    printf("\033[0m\n");
+
+#if defined(_POSIX_THREAD_SAFE_FUNCTIONS)
+    funlockfile(stdout);
+#endif
 }
 
 } // namespace Platform