libmdbx added as set of files

1 files changed, 287 insertions, 0 deletions

diff --git a/plugins/Dbx_mdbx/src/libmdbx/test/log.cc b/plugins/Dbx_mdbx/src/libmdbx/test/log.cc
new file mode 100644
index 0000000000..5ab9951338
--- /dev/null
+++ b/plugins/Dbx_mdbx/src/libmdbx/test/log.cc
@@ -0,0 +1,287 @@
+/*
+ * Copyright 2017 Leonid Yuriev <leo@yuriev.ru>
+ * and other libmdbx authors: please see AUTHORS file.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "test.h"
+
+static void fflushall() { fflush(nullptr); }
+
+void failure(const char *fmt, ...) {
+  va_list ap;
+  va_start(ap, fmt);
+  fflushall();
+  logging::output(logging::failure, fmt, ap);
+  va_end(ap);
+  fflushall();
+  exit(EXIT_FAILURE);
+}
+
+const char *test_strerror(int errnum) {
+  static __thread char buf[1024];
+  return mdbx_strerror_r(errnum, buf, sizeof(buf));
+}
+
+void __noreturn failure_perror(const char *what, int errnum) {
+  failure("%s failed: %s (%d)\n", what, test_strerror(errnum), errnum);
+}
+
+//-----------------------------------------------------------------------------
+
+namespace logging {
+
+static std::string prefix;
+static std::string suffix;
+static loglevel level;
+static FILE *last;
+
+void setup(loglevel _level, const std::string &_prefix) {
+  level = (_level > error) ? failure : _level;
+  prefix = _prefix;
+}
+
+void setup(const std::string &_prefix) { prefix = _prefix; }
+
+const char *level2str(const loglevel alevel) {
+  switch (alevel) {
+  default:
+    return "invalid/unknown";
+  case extra:
+    return "extra";
+  case trace:
+    return "trace";
+  case verbose:
+    return "verbose";
+  case info:
+    return "info";
+  case notice:
+    return "notice";
+  case warning:
+    return "warning";
+  case error:
+    return "error";
+  case failure:
+    return "failure";
+  }
+}
+
+bool output(const loglevel priority, const char *format, ...) {
+  if (priority < level)
+    return false;
+
+  va_list ap;
+  va_start(ap, format);
+  output(priority, format, ap);
+  va_end(ap);
+  return true;
+}
+
+bool output(const logging::loglevel priority, const char *format, va_list ap) {
+  if (last) {
+    putc('\n', last);
+    fflush(last);
+    last = nullptr;
+  }
+
+  if (priority < level)
+    return false;
+
+  chrono::time now = chrono::now_realtime();
+  struct tm tm;
+#ifdef _MSC_VER
+  int rc = _localtime32_s(&tm, (const __time32_t *)&now.utc);
+#else
+  time_t time = now.utc;
+  int rc = localtime_r(&time, &tm) ? MDBX_SUCCESS : errno;
+#endif
+  if (rc != MDBX_SUCCESS)
+    failure_perror("localtime_r()", rc);
+
+  last = stdout;
+  fprintf(last,
+          "[ %02d%02d%02d-%02d:%02d:%02d.%06d_%05u %-10s %.4s ] %s" /* TODO */,
+          tm.tm_year - 100, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min,
+          tm.tm_sec, chrono::fractional2us(now.fractional), osal_getpid(),
+          prefix.c_str(), level2str(priority), suffix.c_str());
+
+  va_list ones;
+  memset(&ones, 0, sizeof(ones)) /* zap MSVC and other stupid compilers */;
+  if (priority >= error)
+    va_copy(ones, ap);
+  vfprintf(last, format, ap);
+
+  size_t len = strlen(format);
+  char end = len ? format[len - 1] : '\0';
+
+  switch (end) {
+  default:
+    putc('\n', last);
+  // fall through
+  case '\n':
+    fflush(last);
+    last = nullptr;
+  // fall through
+  case ' ':
+  case '_':
+  case ':':
+  case '|':
+  case ',':
+  case '\t':
+  case '\b':
+  case '\r':
+  case '\0':
+    break;
+  }
+
+  if (priority >= error) {
+    if (last != stderr) {
+      fprintf(stderr, "[ %05u %-10s %.4s ] %s", osal_getpid(), prefix.c_str(),
+              level2str(priority), suffix.c_str());
+      vfprintf(stderr, format, ones);
+      if (end != '\n')
+        putc('\n', stderr);
+      fflush(stderr);
+    }
+    va_end(ones);
+  }
+
+  return true;
+}
+
+bool feed(const char *format, va_list ap) {
+  if (!last)
+    return false;
+
+  vfprintf(last, format, ap);
+  size_t len = strlen(format);
+  if (len && format[len - 1] == '\n') {
+    fflush(last);
+    last = nullptr;
+  }
+  return true;
+}
+
+bool feed(const char *format, ...) {
+  if (!last)
+    return false;
+
+  va_list ap;
+  va_start(ap, format);
+  feed(format, ap);
+  va_end(ap);
+  return true;
+}
+
+local_suffix::local_suffix(const char *c_str)
+    : trim_pos(suffix.size()), indent(0) {
+  suffix.append(c_str);
+}
+
+local_suffix::local_suffix(const std::string &str)
+    : trim_pos(suffix.size()), indent(0) {
+  suffix.append(str);
+}
+
+void local_suffix::push() {
+  indent += 1;
+  suffix.push_back('\t');
+}
+
+void local_suffix::pop() {
+  assert(indent > 0);
+  if (indent > 0) {
+    indent -= 1;
+    suffix.pop_back();
+  }
+}
+
+local_suffix::~local_suffix() { suffix.erase(trim_pos); }
+
+} /* namespace log */
+
+void log_extra(const char *msg, ...) {
+  if (logging::extra >= logging::level) {
+    va_list ap;
+    va_start(ap, msg);
+    logging::output(logging::extra, msg, ap);
+    va_end(ap);
+  } else
+    logging::last = nullptr;
+}
+
+void log_trace(const char *msg, ...) {
+  if (logging::trace >= logging::level) {
+    va_list ap;
+    va_start(ap, msg);
+    logging::output(logging::trace, msg, ap);
+    va_end(ap);
+  } else
+    logging::last = nullptr;
+}
+
+void log_verbose(const char *msg, ...) {
+  if (logging::verbose >= logging::level) {
+    va_list ap;
+    va_start(ap, msg);
+    logging::output(logging::verbose, msg, ap);
+    va_end(ap);
+  } else
+    logging::last = nullptr;
+}
+
+void log_info(const char *msg, ...) {
+  if (logging::info >= logging::level) {
+    va_list ap;
+    va_start(ap, msg);
+    logging::output(logging::info, msg, ap);
+    va_end(ap);
+  } else
+    logging::last = nullptr;
+}
+
+void log_notice(const char *msg, ...) {
+  if (logging::notice >= logging::level) {
+    va_list ap;
+    va_start(ap, msg);
+    logging::output(logging::notice, msg, ap);
+    va_end(ap);
+  } else
+    logging::last = nullptr;
+}
+
+void log_warning(const char *msg, ...) {
+  if (logging::warning >= logging::level) {
+    va_list ap;
+    va_start(ap, msg);
+    logging::output(logging::warning, msg, ap);
+    va_end(ap);
+  } else
+    logging::last = nullptr;
+}
+
+void log_error(const char *msg, ...) {
+  if (logging::error >= logging::level) {
+    va_list ap;
+    va_start(ap, msg);
+    logging::output(logging::error, msg, ap);
+    va_end(ap);
+  } else
+    logging::last = nullptr;
+}
+
+void log_trouble(const char *where, const char *what, int errnum) {
+  log_error("%s: %s %s", where, what, test_strerror(errnum));
+}
+
+bool log_enabled(const logging::loglevel priority) {
+  return (priority >= logging::level);
+}