gh-475: Fix issues in third_party/proctitle.c

 * add proctitle.h;
 * add config-time detection of setproctitle() syscall;
 * fixing program_invocation_(short)?_name globals (glibc);
 * fixing progname (getprogname(), initialized with argv[0]);
 * this module now works on osx;
 * fix osx ps displaying garbage (argc-1 extra \0 necessary);
 * general refactoring;
 * fix linux proctitle truncation (init_set_proctitle was called with
   argv+1, this is wrong);

 * CAVEAT: 'progname: ' prefix no longer present, will fix later

Author: mejedi

CMakeLists.txt

@@ -113,6 +113,10 @@ check_struct_has_member("struct stat" "st_mtimensec" "sys/stat.h"
 # stack. Find whether or not it's present.
 check_library_exists("" __libc_stack_end "" HAVE_LIBC_STACK_END)
 
+check_function_exists(setproctitle HAVE_SETPROCTITLE)
+check_function_exists(setprogname HAVE_SETPROGNAME)
+check_function_exists(getprogname HAVE_GETPROGNAME)
+
 #
 # Enable 'make tags' target.
 #

src/main.cc

@@ -592,6 +592,7 @@ main(int argc, char **argv)
 #ifdef HAVE_BFD
 	symbols_load(argv[0]);
 #endif
+	argv = init_set_proc_title(argc, argv);
 	/*
 	 * Support only #!/usr/bin/tarantol but not
 	 * #!/usr/bin/tarantool -a -b because:
@@ -625,7 +626,6 @@ main(int argc, char **argv)
 	crc32_init();
 	memory_init();
 
-	argv = init_set_proc_title(argc, argv);
 	main_argc = argc;
 	main_argv = argv;
 

src/trivia/config.h.cmake

@@ -192,6 +192,10 @@
 /** pthread_set_name_np(pthread_self(), "") - *BSD */
 #cmakedefine HAVE_PTHREAD_SET_NAME_NP 1
 
+#cmakedefine HAVE_SETPROCTITLE 1
+#cmakedefine HAVE_SETPROGNAME 1
+#cmakedefine HAVE_GETPROGNAME 1
+
 /** \cond public */
 
 /** System configuration dir (e.g /etc) */