Change the min_free default to 5%

[software/dgc/cdgc.git] / rt / gc / cdgc / opts.d

diff --git a/rt/gc/cdgc/opts.d b/rt/gc/cdgc/opts.d
index 5f93cd039941314927806c8fb19e2eeb3a0230ba..7cd6784f9c7338673dbcd953d066bece6cfbeb2d 100644 (file)
--- a/rt/gc/cdgc/opts.d
+++ b/rt/gc/cdgc/opts.d
@@ -33,9 +33,12 @@
 
 module rt.gc.cdgc.opts;
 
+//debug = PRINTF;
+
 import cstdlib = tango.stdc.stdlib;
 import cstring = tango.stdc.string;
 import cerrno = tango.stdc.errno;
+debug (PRINTF) import tango.stdc.stdio: printf;
 
 
 private:
@@ -55,6 +58,7 @@ struct Options
     bool conservative = false;
     bool fork = true;
     bool eager_alloc = true;
+    uint min_free = 5; // percent of the heap (0-100)
     size_t prealloc_psize = 0;
     size_t prealloc_npools = 0;
 }
@@ -62,6 +66,22 @@ struct Options
 package Options options;
 
 
+debug (PRINTF)
+void print_options()
+{
+    int b(bool v) { return v; }
+    with (options)
+    printf("rt.gc.cdgc.opts: verbose=%u, log_file='%s', "
+            "malloc_stats_file='%s', collect_stats_file='%s', sentinel=%d, "
+            "mem_stomp=%d, conservative=%d, fork=%d, eager_alloc=%d, "
+            "early_collect=%d, min_free=%u, prealloc_psize=%lu, "
+            "prealloc_npools=%lu\n", verbose, log_file.ptr,
+            malloc_stats_file.ptr, collect_stats_file.ptr, b(sentinel),
+            b(mem_stomp), b(conservative), b(fork), b(eager_alloc),
+            b(early_collect), min_free, prealloc_psize, prealloc_npools);
+}
+
+
 bool cstr_eq(char* s1, char* s2)
 {
     return cstring.strcmp(s1, s2) == 0;
@@ -101,6 +121,16 @@ void parse_prealloc(char* value)
 }
 
 
+void parse_min_free(char* value)
+{
+    char* end;
+    long free = cstdlib.strtol(value, &end, 10);
+    if (*end != '\0' || end == value || cerrno.errno || free < 0 || free > 100)
+        return;
+    options.min_free = free;
+}
+
+
 void process_option(char* opt_name, char* opt_value)
 {
     if (cstr_eq(opt_name, "verbose"))
@@ -121,6 +151,8 @@ void process_option(char* opt_name, char* opt_value)
         options.fork = parse_bool(opt_value);
     else if (cstr_eq(opt_name, "eager_alloc"))
         options.eager_alloc = parse_bool(opt_value);
+    else if (cstr_eq(opt_name, "min_free"))
+        parse_min_free(opt_value);
     else if (cstr_eq(opt_name, "pre_alloc"))
         parse_prealloc(opt_value);
 }
@@ -134,8 +166,10 @@ package void parse(char* opts_string)
     opt_value[0] = '\0';
     char* curr = opt_name.ptr;
     size_t i = 0;
-    if (opts_string is null)
+    if (opts_string is null) {
+        debug (PRINTF) printf("rt.gc.cdgc.opts: no options overriden\n");
         return;
+    }
     for (; *opts_string != '\0'; opts_string++)
     {
         char c = *opts_string;
@@ -170,6 +204,7 @@ package void parse(char* opts_string)
         i--;
     curr[i] = '\0';
     process_option(opt_name.ptr, opt_value.ptr);
+    debug (PRINTF) print_options();
 }
 
 
@@ -185,6 +220,7 @@ unittest
         assert (eager_alloc == true);
         assert (prealloc_psize == 0);
         assert (prealloc_npools == 0);
+        assert (min_free == 5);
     }
     parse("mem_stomp");
     with (options) {
@@ -197,6 +233,7 @@ unittest
         assert (eager_alloc == true);
         assert (prealloc_psize == 0);
         assert (prealloc_npools == 0);
+        assert (min_free == 5);
     }
     parse("mem_stomp=0:verbose=2:conservative:fork=0:eager_alloc=0");
     with (options) {
@@ -209,6 +246,7 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 0);
         assert (prealloc_npools == 0);
+        assert (min_free == 5);
     }
     parse("log_file=12345 67890:verbose=1:sentinel=4:mem_stomp=1");
     with (options) {
@@ -221,8 +259,9 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 0);
         assert (prealloc_npools == 0);
+        assert (min_free == 5);
     }
-    parse("pre_alloc");
+    parse("pre_alloc:min_free=30");
     with (options) {
         assert (verbose == 1);
         assert (cstring.strcmp(log_file.ptr, "12345 67890".ptr) == 0);
@@ -233,6 +272,7 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 0);
         assert (prealloc_npools == 0);
+        assert (min_free == 30);
     }
     parse("pre_alloc=1");
     with (options) {
@@ -245,8 +285,9 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 1 * 1024 * 1024);
         assert (prealloc_npools == 1);
+        assert (min_free == 30);
     }
-    parse("pre_alloc=5a");
+    parse("pre_alloc=5a:min_free=101");
     with (options) {
         assert (verbose == 1);
         assert (cstring.strcmp(log_file.ptr, "12345 67890".ptr) == 0);
@@ -257,8 +298,9 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 1 * 1024 * 1024);
         assert (prealloc_npools == 1);
+        assert (min_free == 30);
     }
-    parse("pre_alloc=5x");
+    parse("pre_alloc=5x:min_free=-1");
     with (options) {
         assert (verbose == 1);
         assert (cstring.strcmp(log_file.ptr, "12345 67890".ptr) == 0);
@@ -269,8 +311,9 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 1 * 1024 * 1024);
         assert (prealloc_npools == 1);
+        assert (min_free == 30);
     }
-    parse("pre_alloc=09x010");
+    parse("pre_alloc=09x010:min_free=10a");
     with (options) {
         assert (verbose == 1);
         assert (cstring.strcmp(log_file.ptr, "12345 67890".ptr) == 0);
@@ -281,8 +324,9 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 9 * 1024 * 1024);
         assert (prealloc_npools == 10);
+        assert (min_free == 30);
     }
-    parse("pre_alloc=5x2");
+    parse("pre_alloc=5x2:min_free=1.0");
     with (options) {
         assert (verbose == 1);
         assert (cstring.strcmp(log_file.ptr, "12345 67890".ptr) == 0);
@@ -293,8 +337,9 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 5 * 1024 * 1024);
         assert (prealloc_npools == 2);
+        assert (min_free == 30);
     }
-    parse("pre_alloc=9x5x");
+    parse("pre_alloc=9x5x:min_free=-1");
     with (options) {
         assert (verbose == 1);
         assert (cstring.strcmp(log_file.ptr, "12345 67890".ptr) == 0);
@@ -305,8 +350,9 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 5 * 1024 * 1024);
         assert (prealloc_npools == 2);
+        assert (min_free == 30);
     }
-    parse("pre_alloc=9x-5");
+    parse("pre_alloc=9x-5:min_free=0");
     with (options) {
         assert (verbose == 1);
         assert (cstring.strcmp(log_file.ptr, "12345 67890".ptr) == 0);
@@ -317,8 +363,9 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 5 * 1024 * 1024);
         assert (prealloc_npools == 2);
+        assert (min_free == 0);
     }
-    parse("pre_alloc=0x3x0x4");
+    parse("pre_alloc=0x3x0x4:min_free=100");
     with (options) {
         assert (verbose == 1);
         assert (cstring.strcmp(log_file.ptr, "12345 67890".ptr) == 0);
@@ -329,6 +376,7 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 5 * 1024 * 1024);
         assert (prealloc_npools == 2);
+        assert (min_free == 100);
     }
     parse(null);
     with (options) {
@@ -341,6 +389,7 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 5 * 1024 * 1024);
         assert (prealloc_npools == 2);
+        assert (min_free == 100);
     }
     parse("");
     with (options) {
@@ -353,6 +402,7 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 5 * 1024 * 1024);
         assert (prealloc_npools == 2);
+        assert (min_free == 100);
     }
     parse(":");
     with (options) {
@@ -365,6 +415,7 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 5 * 1024 * 1024);
         assert (prealloc_npools == 2);
+        assert (min_free == 100);
     }
     parse("::::");
     with (options) {
@@ -377,6 +428,7 @@ unittest
         assert (eager_alloc == false);
         assert (prealloc_psize == 5 * 1024 * 1024);
         assert (prealloc_npools == 2);
+        assert (min_free == 100);
     }
 }