code: plan9front

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gefs: add command to show free ranges on console

--- a/sys/src/cmd/gefs/cons.c

+++ b/sys/src/cmd/gefs/cons.c

@@ -338,6 +338,24 @@

 }

 static void

+showfree(int fd, char **, int)

+{

+	Arange *r;

+	Arena *a;

+	int i;

+

+	for(i = 0; i < fs->narena; i++){

+		a = &fs->arenas[i];

+		qlock(a);

+		fprint(fd, "arena %d %llx+%llx{\n", i, a->h0->bp.addr, a->size);

+		for(r = (Arange*)avlmin(a->free); r != nil; r = (Arange*)avlnext(r))

+			fprint(fd, "\t%llx..%llx (%llx)\n", r->off, r->off+r->len, r->len);

+		fprint(fd, "}\n");

+		qunlock(a);

+	}

+}

+

+static void

 unreserve(int fd, char **ap, int)

 {

 	if(strcmp(ap[0], "on") == 0)

@@ -387,6 +405,7 @@

 	{.name="show",		.sub="tree",	.minarg=0, .maxarg=1, .fn=showtree},

 	{.name="show",		.sub="users",	.minarg=0, .maxarg=0, .fn=showusers},

 	{.name="show",		.sub="bstate",	.minarg=0, .maxarg=0, .fn=showbstate},

+	{.name="show",		.sub="free",	.minarg=0, .maxarg=0, .fn=showfree},

 	{.name="debug",		.sub=nil,	.minarg=0, .maxarg=1, .fn=setdbg},

 	{.name="save",		.sub="trace",	.minarg=0, .maxarg=1, .fn=savetrace},

 	{.name=nil, .sub=nil},