implementation of dmm_set_knobs()

src/knobs.c

@@ -25,10 +25,13 @@
 #include "dmm_config.h"
 #include "dmmlib/dmmlib.h"
 
+#include "locks.h"
+
 __attribute__((constructor)) void knobs_init(void);
 
 /** Initializes the knobs structure of the system allocator. */
 void knobs_init(void) {
+    lock_global();
     systemallocator.dmm_knobs.sys_alloc_size = SYS_ALLOC_SIZE;
 #ifdef GOOD_FIT
     systemallocator.dmm_knobs.fitpercentage = GOOD_FIT_PERCENTAGE;
@@ -39,4 +42,24 @@ void knobs_init(void) {
 #ifdef SPLITTING_VARIABLE
     systemallocator.dmm_knobs.min_split_size = MIN_SPLITTING_SIZE;
 #endif /* SPLITTING_VARIABLE */
+    unlock_global();
+}
+
+uint32_t dmm_set_knobs(dmm_knobs_t *conf);
+
+/** Sets the system allocator's knob structure. */
+uint32_t dmm_set_knobs(dmm_knobs_t *conf) {
+    lock_global();
+    systemallocator.dmm_knobs.sys_alloc_size = conf->sys_alloc_size;
+#ifdef GOOD_FIT
+    systemallocator.dmm_knobs.fitpercentage = conf->fitpercentage;
+#endif /* GOOD_FIT_PERCENTAGE */
+#ifdef COALESCING_VARIABLE
+    systemallocator.dmm_knobs.max_coalesce_size = conf->max_coalesce_size;
+#endif /* COALESCING_VARIABLE */
+#ifdef SPLITTING_VARIABLE
+    systemallocator.dmm_knobs.min_split_size = conf->min_split_size;
+#endif /* SPLITTING_VARIABLE */
+    unlock_global();
+    return 0;
 }