trick/docs/documentation/web/http-alloc-api.md

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HTTP-API: alloc_info

http://localhost:8888/api/http/alloc_info

Purpose

Request a JSON encoded sub-list of allocation descriptors from the Memory Manager’s alloc_info list.

Query String Parameters

Parameter	Default	Description
start	0	starting index of the sub-list.
count	20	number of allocation descriptors.

EXAMPLE:

http://localhost:8888/api/http/alloc_info?start=20&count=2

Query Response

Returns a JSON object containing four name-value pairs:

JSON Response Object

Name	Value Description
alloc_total	Total number allocations in the Memory Manager’s alloc_info list.
chunk_size	Number of allocation description objects in alloc_list.
chunk_start	The Memory Manager alloc_info index of the first alloc_list element below
alloc_list	Array of JSON Allocation Description objects (described below).

JSON Allocation Description Object

Name	Value Description
name	Name of the allocation. May be Null
start	Starting address of the allocation.
end	Ending address of the allocation.
num
size	Size of the allocation in bytes.
type	Type descriptor of the allocation.
stcl	Storage class of the allocation. Either TRICK_EXTERN or TRICK_LOCAL.
language	Language. Either : Language_C or Language_CPP.
index	Array dimension sizes of the allocation (if it represents an array).

Example:

In SIM_cannon_numeric (one of Trick's example sims) the following query resulted in the following JSON.

Query

http://localhost:8888/api/http/alloc_info?start=20&count=2

Response

{ "alloc_total":43,
  "chunk_size":2,
  "chunk_start":20,
  "alloc_list":[
                 { "name":"dyn",
                   "start":"0x101aa9900",
                   "end":"0x101aa9b27",
                   "num":"1",
                   "size":"552",
                   "type":"CannonSimObject",
                   "stcl":"TRICK_EXTERN",
                   "language":"Language_CPP",
                   "index": []
                 }
                 ,
                 { "name":"web",
                   "start":"0x101aa9610",
                   "end":"0x101aa98ff",
                   "num":"1",
                   "size":"752",
                   "type":"WebServerSimObject",
                   "stcl":"TRICK_EXTERN",
                   "language":"Language_CPP",
                   "index": []
                 }
               ]
}

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