Do not use dbengine headers when dbengine is disabled. (#11967)

Prior to this commit both daemon/commands.c and spawn/spawn.c used to
include database/engine/rrdenginelib.h, ie. a header file that is available
only when enabling the dbengine feature.

5 files changed, 67 insertions, 0 deletions

diff --git a/libnetdata/Makefile.am b/libnetdata/Makefile.am
index 598b72f5b0..e787801c28 100644
--- a/libnetdata/Makefile.am
+++ b/libnetdata/Makefile.am
@@ -8,6 +8,7 @@ SUBDIRS = \
     avl \
     buffer \
     clocks \
+    completion \
     config \
     dictionary \
     ebpf \
diff --git a/libnetdata/completion/Makefile.am b/libnetdata/completion/Makefile.am
new file mode 100644
index 0000000000..babdcf0df3
--- /dev/null
+++ b/libnetdata/completion/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/libnetdata/completion/completion.c b/libnetdata/completion/completion.c
new file mode 100644
index 0000000000..77818f40d6
--- /dev/null
+++ b/libnetdata/completion/completion.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "completion.h"
+
+void completion_init(struct completion *p)
+{
+    p->completed = 0;
+    fatal_assert(0 == uv_cond_init(&p->cond));
+    fatal_assert(0 == uv_mutex_init(&p->mutex));
+}
+
+void completion_destroy(struct completion *p)
+{
+    uv_cond_destroy(&p->cond);
+    uv_mutex_destroy(&p->mutex);
+}
+
+void completion_wait_for(struct completion *p)
+{
+    uv_mutex_lock(&p->mutex);
+    while (0 == p->completed) {
+        uv_cond_wait(&p->cond, &p->mutex);
+    }
+    fatal_assert(1 == p->completed);
+    uv_mutex_unlock(&p->mutex);
+}
+
+void completion_mark_complete(struct completion *p)
+{
+    uv_mutex_lock(&p->mutex);
+    p->completed = 1;
+    uv_mutex_unlock(&p->mutex);
+    uv_cond_broadcast(&p->cond);
+}
diff --git a/libnetdata/completion/completion.h b/libnetdata/completion/completion.h
new file mode 100644
index 0000000000..667360a424
--- /dev/null
+++ b/libnetdata/completion/completion.h
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_COMPLETION_H
+#define NETDATA_COMPLETION_H
+
+#include "../libnetdata.h"
+
+struct completion {
+    uv_mutex_t mutex;
+    uv_cond_t cond;
+    volatile unsigned completed;
+};
+
+void completion_init(struct completion *p);
+
+void completion_destroy(struct completion *p);
+
+void completion_wait_for(struct completion *p);
+
+void completion_mark_complete(struct completion *p);
+
+#endif /* NETDATA_COMPLETION_H */
diff --git a/libnetdata/libnetdata.h b/libnetdata/libnetdata.h
index b49ab21a08..432c74f461 100644
--- a/libnetdata/libnetdata.h
+++ b/libnetdata/libnetdata.h
@@ -303,9 +303,14 @@ extern char *find_and_replace(const char *src, const char *find, const char *rep
 #define KILOBITS_IN_A_MEGABIT 1000
 
 /* misc. */
+
 #define UNUSED(x) (void)(x)
 #define error_report(x, args...) do { errno = 0; error(x, ##args); } while(0)
 
+// Taken from linux kernel
+#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+
+
 extern void netdata_cleanup_and_exit(int ret) NORETURN;
 extern void send_statistics(const char *action, const char *action_result, const char *action_data);
 extern char *netdata_configured_host_prefix;
@@ -318,6 +323,7 @@ extern char *netdata_configured_host_prefix;
 #include "avl/avl.h"
 #include "inlined.h"
 #include "clocks/clocks.h"
+#include "completion/completion.h"
 #include "popen/popen.h"
 #include "simple_pattern/simple_pattern.h"
 #ifdef ENABLE_HTTPS