First version of #25 implementation, providing memory_get_usage/memory_get_peak_usage/memory_limit

engine/api.c

@@ -120,6 +120,34 @@ static sxi32 EngineConfig(ph7 *pEngine, sxi32 nOp, va_list ap) {
 				}
 				break;
 			}
+		case PH7_CONFIG_MEM_LIMIT: {
+				char *iMaxStr = va_arg(ap, char *);
+				if(!iMaxStr) {
+					break;
+				}
+				char *iMaxRem;
+				sxu64 iMax;
+				SyStrToInt64(iMaxStr, strlen(iMaxStr), (void *)&iMax, &iMaxRem);
+				if(iMaxRem) {
+					switch(*iMaxRem) {
+						case 'G':
+						case 'g':
+							iMax *= 1024;
+						case 'M':
+						case 'm':
+							iMax *= 1024;
+						case 'K':
+						case 'k':
+							iMax *= 1024;
+					}
+				}
+				if(iMax >= 1024 * 100 && iMax <= LONG_MAX) {
+					pEngine->sAllocator.pHeap.iMax = iMax;
+				} else {
+					rc = PH7_CORRUPT;
+				}
+				break;
+			}
 		case PH7_CONFIG_ERR_ABORT:
 			/* Reserved for future use */
 			break;