Hash map implementation in C

I've written a hash map in C which is based on linked list data structure. It may be useful in various scenarios. Here is the list of the APIs implemented in this:

// Hash map structure

struct hash_map_t{

struct hash_map_t* nxt;

char* account_poid; //Key

int status;  // Value

}

=> HASH MAP OPERATIONS

/*

 * Function to insert/update a key-value pair

 * If the key doesn't exist, this function will create a new node and add the 

 * key-value pair, if the key already exit, its value will be updated

 */

void hash_map_set( struct hash_map_t* hm,

        char* acc_poid, 

        int         status);

/*

 * Function to free the memory allocated by hash map

 */

void    free_hash_map(struct  hash_map_t* hm);

/*

 * Function to retrieve the map node with the kep acc_poid  

 */

struct hash_map_t* getNodeWithKey(

                              struct hash_map_t* hm,

      char*                 acc_poid);

/*

 * Function to retrieve the map node using value status   

 */

struct hash_map_t* getNodeWithValue(

                               struct hash_map_t* hm,

       int                           status);

   

The code is attached at the following location:

https://docs.google.com/file/d/0B_TJwfRI4aqhcjJRMXBhQUNCQk0/edit?usp=sharing

If you've Scripd account, download it here:
https://www.scribd.com/doc/247124214/Hash-Map-Lib

BRM Errors

Title: pcm_dyn_attach_mmap() issue

Issue: Following error observed while starting cm or in the cm.pinlog while executing any application connected to CM
mmap failed for pcm_dyn_attach_mmap(): Invalid argument

Cause: This error usually comes when you use reference to some mapping parameter/file in the CM or application's pin.conf and that is invalid or empty. E.g. if the entry file for ops_fields_extension_file is empty or invalid, we can get the error:
mmap failed for pcm_dyn_attach_mmap(): Invalid argument

Title: Resource Credit Limit Issue

Issue:
2:SACJOSHI-US:CustomerCenter:0:AWT-EventQueue-0:108:1476427204:0:root.0.0.0.1:::
        Credit limit exceeded
        <location=PIN_ERRLOC_FM:5 class=PIN_ERRCLASS_SYSTEM_DETERMINATE:1 errno=PIN_ERR_CREDIT_LIMIT_EXCEEDED:81>
        <field num=0:0,0 recid=0 reserved=0 reserved2=0 time(sec:usec)=0:0>
        <facility=0 msg_id=0 version=0>

Cause: This error usually comes when you use NCR (non-currency resource) to have a +ve balance impact. By default the credit limit for NCRs is 0 in BRM. In case, you need to have a positive balance impact on NCR, you need to update the credit limit.

0 PIN_FLD_POID                                   POID [0] 0.0.0.1 /config/credit_profile 201 0
0 PIN_FLD_PROFILES                      ARRAY [2] allocated 2, used 2
1     PIN_FLD_CREDIT_FLOOR   DECIMAL [0] NULL
1     PIN_FLD_CREDIT_LIMIT     DECIMAL [0] NULL


Title: AMT procedure errors

Issue:
ORA-29280: invalid directory path
ORA-06512: at "WK33_PIN03.AMT_MV", line 347
ORA-06512: at line 1

Cause: The directory mentioned in Infranet.properties of pin_amt application is not created or if it is created you are using the name in lowercase, change it to upper case.

Issue:
ORA-29289: directory access denied
ORA-06512: at "WK33_PIN03.AMT_MV", line 347
ORA-06512: at line 1

Cause: Good news is that the directory exists but the db user with which pin_amt is being executed is not having read/write permission.

Issue:
ORA-02055: distributed update operation failed; rollback required
ORA-54013: INSERT operation disallowed on virtual columns
ORA-06512: at "WK33_PIN03.AMT_MV", line 722
ORA-06512: at line 1

Cause: Some table in the AMT_METADATA is having virtual column, check what are the custom tables added and check which one has virtual columns.


Title: Cache entry not found

E Mon Apr  8 16:13:58 2013  <<hostname>>  cm:18233  fm_bill_utils_billing.c(49):1039 1:<<hostname>>:testnap:18231:-136099600:100001:1365405238:1
        Could not find cache entry: "PIN_SEQUENCE_TYPE_PACKAGE_ID"
E Mon Apr  8 16:13:58 2013  <<hostname>>  cm:18233  fm_subscription_purchase_deal.c:805 1:<<hostname>>:testnap:18231:-136099600:100001:1365405238:1
        op_subscription_purchase_deal error
        <location=PIN_ERRLOC_FM:5 class=PIN_ERRCLASS_SYSTEM_DETERMINATE:1 errno=PIN_ERR_NOT_FOUND:3>
        <field num=^Aopsflds:0,0 recid=0 reserved=3 reserved2=0 time(sec:usec)=0:0>
        <facility=0 msg_id=0 version=0>

Resolution: As the cache entry is missing, it means CM could not load few variable, restart cm to fix this.


Title: pricing_admin.pl failed in initializing


-bash-3.2$ ./pricing_admin.pl -init
EBUF: errno=<PIN_ERR_BAD_CRYPT:15> location=<PIN_ERRLOC_DM:4> class=<UNKNOWN:0> field num=<0:0,0> recid=<0> reserved=<0>
0 PIN_FLD_POID                   POID [0] 0.0.0.1 /config/pricing_admin -1 0
0 PIN_FLD_ACCOUNT_OBJ            POID [0] 0.0.0.1 /account 1 0
0 PIN_FLD_HOSTNAME                STR [0] "-"
0 PIN_FLD_NAME                    STR [0] "config_pricing_admin"
0 PIN_FLD_PROGRAM_NAME            STR [0] "-"
0 PIN_FLD_CONFIG_INFO       SUBSTRUCT [0] allocated 6, used 6
1     PIN_FLD_HOSTNAME            STR [0] "sacjoshi-linux"
1     PIN_FLD_LOGIN               STR [0] "INTEGRATE"
1     PIN_FLD_NAME                STR [0] "brm11gdb"
1     PIN_FLD_PASSWD              STR [0] "integrate"
1     PIN_FLD_PORT                INT [0] 1521
1     PIN_FLD_SERVER_TYPE         STR [0] "oracle"
call_opcode: PCM_OP_CREATE_OBJ failed. at ./pricing_admin.pl line 504.
Initializing config object for pricing admin failed.

Resolution: - crypt md5 entry is not enabled, enable this entry in dm_oracle's pin.conf


Another issue that can sometimes occur due to installation issues is:

-bash-3.2$ ./pricing_admin.pl -set <admins.txt
EBUF: errno=<PIN_ERR_BAD_ARG:4> location=<PIN_ERRLOC_DM:4> class=<UNKNOWN:0> field num=<PIN_FLD_POID:7,16> recid=<0> reserved=<0>
0 PIN_FLD_RESULTS                  ARRAY [*] NULL
0 PIN_FLD_POID                      POID [0] 0.0.0.1 /search -1 0
0 PIN_FLD_ARGS                     ARRAY [1] allocated 1, used 1
1     PIN_FLD_POID                  POID [0] 0.0.0.1 /config/pricing_admin -1 0
0 PIN_FLD_TEMPLATE                   STR [0] "select X from /config/pricing_admin where F1 = V1 "
0 PIN_FLD_FLAGS                      INT [0] 0
call_opcode: PCM_OP_GLOBAL_SEARCH failed. at ./pricing_admin.pl line 504.
Search failed for /config/pricing_admin object.