c0appz: add -t option to create m0trace.pid file

Closes Seagate#4.

c0appz.c

@@ -97,6 +97,7 @@ extern int qos_total_weight; 		/* total bytes read or written 	*/
 extern pthread_mutex_t qos_lock;	/* lock  qos_total_weight 	*/
 enum {MAX_M0_BUFSZ = 128*1024*1024};    /* max bs for object store I/O  */
 int trace_level=0;
+bool m0trace_on = false;
 
 /*
  ******************************************************************************
@@ -892,7 +893,8 @@ int c0appz_init(int idx)
 	fprintf(stderr,"\n---\n");
 #endif
 
-	m0_trace_set_mmapped_buffer(false);
+	if (!m0trace_on)
+		m0_trace_set_mmapped_buffer(false);
 	/* clovis instance */
 	rc = m0_clovis_init(&clovis_instance, &clovis_conf, true);
 	if (rc != 0) {

c0appz.h

@@ -27,6 +27,8 @@
 #include "clovis/clovis.h"
 #include "lib/types.h" /* uint32_t */
 
+extern bool m0trace_on;
+
 int c0appz_init(int idx);
 int c0appz_free(void);
 

c0cp.c

@@ -70,6 +70,7 @@ options are:\n\
 	-u | unit size (in KiBs), must be power of 2, >= 4 and <= 4096.\n\
            | By default, determined automatically based on the bsz and\n\
            | parity configuration of the pool.\n\
+        -t | create m0trace.pid file\n\
         -v | be more verbose\n\
 \n\
 The -f option forces rewriting on an object if that object already exists. \n\
@@ -121,7 +122,7 @@ int main(int argc, char **argv)
 	prog = basename(strdup(argv[0]));
 
 	/* getopt */
-	while((opt = getopt(argc, argv, ":apfc:x:u:v"))!=-1){
+	while((opt = getopt(argc, argv, ":apfc:x:u:tv"))!=-1){
 		switch(opt){
 		case 'a':
 			m0bs = 1;
@@ -148,6 +149,9 @@ int main(int argc, char **argv)
 			if(!isdigit(optarg[0])) pool = -1;
 			if((pool<0)||(pool>3)) help();
 			break;
+		case 't':
+			m0trace_on = true;
+			break;
 		case 'v':
 			trace_level++;
 			break;

c0ct.c

@@ -62,6 +62,7 @@ options are:\n\
 	-p | performance\n\
 	-c | contiguous mode. \n\
 	     -c <n> read <n> contiguous copies of the file. \n\
+	-t | create m0trace.pid file\n\
 	-v | be more verbose\n\
 \n\
 The -p option enables performance monitoring. It collects performance stats\n\
@@ -101,7 +102,7 @@ int main(int argc, char **argv)
 	prog = basename(strdup(argv[0]));
 
 	/* getopt */
-	while((opt = getopt(argc, argv, ":apc:v"))!=-1){
+	while((opt = getopt(argc, argv, ":apc:tv"))!=-1){
 		switch(opt){
 		case 'a':
 			m0bs = 1;
@@ -115,6 +116,9 @@ int main(int argc, char **argv)
 			if(cont<0) cont=0;
 			if(!cont) help();
 			break;
+		case 't':
+			m0trace_on = true;
+			break;
 		case 'v':
 			trace_level++;
 			break;

c0rm.c

@@ -46,6 +46,7 @@ idl - Mero fid low\n\
 option is:\n\
 	-y | yes\n\
 	-p | performance\n\
+	-t | create m0trace.pid file\n\
 		\n\
 The -y option forces deleting an object if that object already exists.\n\
 The -p option enables performance monitoring. It collects performance stats\n\
@@ -72,14 +73,17 @@ int main(int argc, char **argv)
 	prog = basename(strdup(argv[0]));
 
 	/* getopt */
-	while((opt = getopt(argc, argv, ":py"))!=-1){
+	while((opt = getopt(argc, argv, ":pyt"))!=-1){
 		switch(opt){
 			case 'p':
 				perf = 1;
 				break;
 			case 'y':
 				yes = 1;
 				break;
+			case 't':
+				m0trace_on = true;
+				break;
 			case ':':
 				fprintf(stderr,"option needs a value\n");
 				break;