Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 256 insertions, 0 deletions

diff --git a/src/common/assert.cc b/src/common/assert.cc
new file mode 100644
index 00000000..6fb50014
--- /dev/null
+++ b/src/common/assert.cc
@@ -0,0 +1,256 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2008-2011 New Dream Network
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include "include/compat.h"
+#include "common/debug.h"
+
+namespace ceph {
+  static CephContext *g_assert_context = NULL;
+
+  /* If you register an assert context, ceph_assert() will try to lock the dout
+   * stream of that context before starting an assert. This is nice because the
+   * output looks better. Your assert will not be interleaved with other dout
+   * statements.
+   *
+   * However, this is strictly optional and library code currently does not
+   * register an assert context. The extra complexity of supporting this
+   * wouldn't really be worth it.
+   */
+  void register_assert_context(CephContext *cct)
+  {
+    ceph_assert(!g_assert_context);
+    g_assert_context = cct;
+  }
+
+  [[gnu::cold]] void __ceph_assert_fail(const char *assertion,
+					const char *file, int line,
+					const char *func)
+  {
+    g_assert_condition = assertion;
+    g_assert_file = file;
+    g_assert_line = line;
+    g_assert_func = func;
+    g_assert_thread = (unsigned long long)pthread_self();
+    ceph_pthread_getname(pthread_self(), g_assert_thread_name,
+		       sizeof(g_assert_thread_name));
+
+    ostringstream tss;
+    tss << ceph_clock_now();
+
+    snprintf(g_assert_msg, sizeof(g_assert_msg),
+	     "%s: In function '%s' thread %llx time %s\n"
+	     "%s: %d: FAILED ceph_assert(%s)\n",
+	     file, func, (unsigned long long)pthread_self(), tss.str().c_str(),
+	     file, line, assertion);
+    dout_emergency(g_assert_msg);
+
+    // TODO: get rid of this memory allocation.
+    ostringstream oss;
+    oss << BackTrace(1);
+    dout_emergency(oss.str());
+
+    if (g_assert_context) {
+      lderr(g_assert_context) << g_assert_msg << std::endl;
+      *_dout << oss.str() << dendl;
+
+      // dump recent only if the abort signal handler won't do it for us
+      if (!g_assert_context->_conf->fatal_signal_handlers) {
+	g_assert_context->_log->dump_recent();
+      }
+    }
+
+    abort();
+  }
+
+  [[gnu::cold]] void __ceph_assert_fail(const assert_data &ctx)
+  {
+    __ceph_assert_fail(ctx.assertion, ctx.file, ctx.line, ctx.function);
+  }
+
+  class BufAppender {
+  public:
+    BufAppender(char* buf, int size) : bufptr(buf), remaining(size) {}
+
+    void printf(const char * format, ...) {
+      va_list args;
+      va_start(args, format);
+      this->vprintf(format, args);
+      va_end(args);
+    }
+
+    void vprintf(const char * format, va_list args) {
+      int n = vsnprintf(bufptr, remaining, format, args);
+      if (n >= 0) {
+	if (n < remaining) {
+	  remaining -= n;
+	  bufptr += n;
+	} else {
+	  remaining = 0;
+	}
+      }
+    }
+
+  private:
+    char* bufptr;
+    int remaining;
+  };
+
+
+  [[gnu::cold]] void __ceph_assertf_fail(const char *assertion,
+					 const char *file, int line,
+					 const char *func, const char* msg,
+					 ...)
+  {
+    ostringstream tss;
+    tss << ceph_clock_now();
+
+    g_assert_condition = assertion;
+    g_assert_file = file;
+    g_assert_line = line;
+    g_assert_func = func;
+    g_assert_thread = (unsigned long long)pthread_self();
+    ceph_pthread_getname(pthread_self(), g_assert_thread_name,
+		       sizeof(g_assert_thread_name));
+
+    BufAppender ba(g_assert_msg, sizeof(g_assert_msg));
+    BackTrace *bt = new BackTrace(1);
+    ba.printf("%s: In function '%s' thread %llx time %s\n"
+	     "%s: %d: FAILED ceph_assert(%s)\n",
+	     file, func, (unsigned long long)pthread_self(), tss.str().c_str(),
+	     file, line, assertion);
+    ba.printf("Assertion details: ");
+    va_list args;
+    va_start(args, msg);
+    ba.vprintf(msg, args);
+    va_end(args);
+    ba.printf("\n");
+    dout_emergency(g_assert_msg);
+
+    // TODO: get rid of this memory allocation.
+    ostringstream oss;
+    oss << *bt;
+    dout_emergency(oss.str());
+
+    if (g_assert_context) {
+      lderr(g_assert_context) << g_assert_msg << std::endl;
+      *_dout << oss.str() << dendl;
+
+      // dump recent only if the abort signal handler won't do it for us
+      if (!g_assert_context->_conf->fatal_signal_handlers) {
+	g_assert_context->_log->dump_recent();
+      }
+    }
+
+    abort();
+  }
+
+  [[gnu::cold]] void __ceph_abort(const char *file, int line,
+				  const char *func, const string& msg)
+  {
+    ostringstream tss;
+    tss << ceph_clock_now();
+
+    g_assert_condition = "abort";
+    g_assert_file = file;
+    g_assert_line = line;
+    g_assert_func = func;
+    g_assert_thread = (unsigned long long)pthread_self();
+    ceph_pthread_getname(pthread_self(), g_assert_thread_name,
+		       sizeof(g_assert_thread_name));
+
+    BackTrace *bt = new BackTrace(1);
+    snprintf(g_assert_msg, sizeof(g_assert_msg),
+             "%s: In function '%s' thread %llx time %s\n"
+	     "%s: %d: ceph_abort_msg(\"%s\")\n", file, func,
+	     (unsigned long long)pthread_self(),
+	     tss.str().c_str(), file, line,
+	     msg.c_str());
+    dout_emergency(g_assert_msg);
+
+    // TODO: get rid of this memory allocation.
+    ostringstream oss;
+    oss << *bt;
+    dout_emergency(oss.str());
+
+    if (g_assert_context) {
+      lderr(g_assert_context) << g_assert_msg << std::endl;
+      *_dout << oss.str() << dendl;
+
+      // dump recent only if the abort signal handler won't do it for us
+      if (!g_assert_context->_conf->fatal_signal_handlers) {
+	g_assert_context->_log->dump_recent();
+      }
+    }
+
+    abort();
+  }
+
+  [[gnu::cold]] void __ceph_abortf(const char *file, int line,
+				   const char *func, const char* msg,
+				   ...)
+  {
+    ostringstream tss;
+    tss << ceph_clock_now();
+
+    g_assert_condition = "abort";
+    g_assert_file = file;
+    g_assert_line = line;
+    g_assert_func = func;
+    g_assert_thread = (unsigned long long)pthread_self();
+    ceph_pthread_getname(pthread_self(), g_assert_thread_name,
+		       sizeof(g_assert_thread_name));
+
+    BufAppender ba(g_assert_msg, sizeof(g_assert_msg));
+    BackTrace *bt = new BackTrace(1);
+    ba.printf("%s: In function '%s' thread %llx time %s\n"
+	      "%s: %d: abort()\n",
+	      file, func, (unsigned long long)pthread_self(), tss.str().c_str(),
+	      file, line);
+    ba.printf("Abort details: ");
+    va_list args;
+    va_start(args, msg);
+    ba.vprintf(msg, args);
+    va_end(args);
+    ba.printf("\n");
+    dout_emergency(g_assert_msg);
+
+    // TODO: get rid of this memory allocation.
+    ostringstream oss;
+    oss << *bt;
+    dout_emergency(oss.str());
+
+    if (g_assert_context) {
+      lderr(g_assert_context) << g_assert_msg << std::endl;
+      *_dout << oss.str() << dendl;
+
+      // dump recent only if the abort signal handler won't do it for us
+      if (!g_assert_context->_conf->fatal_signal_handlers) {
+	g_assert_context->_log->dump_recent();
+      }
+    }
+
+    abort();
+  }
+
+  [[gnu::cold]] void __ceph_assert_warn(const char *assertion,
+					const char *file,
+					int line, const char *func)
+  {
+    char buf[8096];
+    snprintf(buf, sizeof(buf),
+	     "WARNING: ceph_assert(%s) at: %s: %d: %s()\n",
+	     assertion, file, line, func);
+    dout_emergency(buf);
+  }
+}