mem: add support for persistent memory storage

Author: razvancrainea

cfg.lex

@@ -282,6 +282,8 @@ SHM_SECONDARY_HASH_SIZE "shm_secondary_hash_size"
 MEM_WARMING_ENABLED "mem_warming"|"mem_warming_enabled"
 MEM_WARMING_PATTERN_FILE "mem_warming_pattern_file"
 MEM_WARMING_PERCENTAGE "mem_warming_percentage"
+RPM_MEM_FILE "restart_persistency_cache_file"
+RPM_MEM_SIZE "restart_persistency_size"
 MEMLOG		"memlog"|"mem_log"
 MEMDUMP		"memdump"|"mem_dump"
 EXECMSGTHRESHOLD		"execmsgthreshold"|"exec_msg_threshold"
@@ -564,6 +566,8 @@ SPACE		[ ]
 <INITIAL>{MEM_WARMING_ENABLED}	{ count(); yylval.strval=yytext; return MEM_WARMING_ENABLED; }
 <INITIAL>{MEM_WARMING_PATTERN_FILE}	{ count(); yylval.strval=yytext; return MEM_WARMING_PATTERN_FILE; }
 <INITIAL>{MEM_WARMING_PERCENTAGE}	{ count(); yylval.strval=yytext; return MEM_WARMING_PERCENTAGE; }
+<INITIAL>{RPM_MEM_FILE}	{ count(); yylval.strval=yytext; return RPM_MEM_FILE; }
+<INITIAL>{RPM_MEM_SIZE}	{ count(); yylval.strval=yytext; return RPM_MEM_SIZE; }
 <INITIAL>{MEMLOG}	{ count(); yylval.strval=yytext; return MEMLOG; }
 <INITIAL>{MEMDUMP}	{ count(); yylval.strval=yytext; return MEMDUMP; }
 <INITIAL>{EXECMSGTHRESHOLD}	{ count(); yylval.strval=yytext; return EXECMSGTHRESHOLD; }

cfg.y

@@ -109,6 +109,7 @@
 #include "bin_interface.h"
 #include "net/trans.h"
 #include "config.h"
+#include "mem/rpm_mem.h"
 
 #ifdef SHM_EXTRA_STATS
 #include "mem/module_info.h"
@@ -347,6 +348,8 @@ static struct multi_str *tmp_mod;
 %token MEM_WARMING_ENABLED
 %token MEM_WARMING_PATTERN_FILE
 %token MEM_WARMING_PERCENTAGE
+%token RPM_MEM_FILE
+%token RPM_MEM_SIZE
 %token MEMLOG
 %token MEMDUMP
 %token EXECMSGTHRESHOLD
@@ -871,6 +874,14 @@ assign_stm: DEBUG EQUAL snumber
 				"for HP_MALLOC\n");
 			#endif
 			}
+		| RPM_MEM_FILE EQUAL STRING {
+			rpm_mem_file = $3;
+			}
+		| RPM_MEM_FILE EQUAL error { yyerror("string value expected"); }
+		| RPM_MEM_SIZE EQUAL NUMBER {
+			rpm_mem_size = $3 * 1024 * 1024;
+			}
+		| RPM_MEM_SIZE EQUAL error { yyerror("int value expected"); }
 		| MEMLOG EQUAL snumber { memlog=$3; memdump=$3; }
 		| MEMLOG EQUAL error { yyerror("int value expected"); }
 		| MEMDUMP EQUAL snumber { memdump=$3; }

config.h

@@ -41,6 +41,7 @@
 #define CFG_FILE CFG_DIR "opensips.cfg"
 #define MEM_WARMING_DEFAULT_PATTERN_FILE CFG_DIR "mem_warming_pattern"
 #define MEM_WARMING_DEFAULT_PERCENTAGE 75
+#define RESTART_PERSISTENCY_MEM_FILE ".restart_persistency.cache"
 
 #define TLS_PKEY_FILE CFG_DIR "tls/ckey.pem"
 #define TLS_CERT_FILE CFG_DIR "tls/cert.pem"

mem/common.h

@@ -78,6 +78,7 @@ int parse_mm(const char *mm_name, enum osips_mm *mm);
 
 extern void *mem_block;
 extern void *shm_block;
+extern void *rpm_block;
 
 #ifdef DBG_MALLOC
 typedef void *(*osips_malloc_f) (void *block, unsigned long size,