I ran into a bit of an issue today related to TSMalloc
Suppose I have a plugin which defines a plugin data structure such as:
typedef struct {
int state;
TSVIO output_vio;
TSIOBuffer output_buffer;
TSIOBufferReader output_reader;
std::string foo;
} TransformationData;
And I have some plugin code which does this:
void allocTransformationData(){
TransformationData *pData;
pData = (TransformationData *) TSmalloc(sizeof(TransformationData));
pData->state = STATE_START;
pData->output_buffer = NULL;
pData->output_vio = NULL;
pData->output_reader = NULL;
pData->foo.assign("bar");
return pData;
}
The line pData->foo.assign("bar");
Will result in a segmentation fault.
Is there a best practice idiom for using std::string items in custom
continuation data? For example should I be using
typedef struct {
int state;
TSVIO output_vio;
TSIOBuffer output_buffer;
TSIOBufferReader output_reader;
std::string *foo;
} TransformationData;
And
Void allocTransformationData(){
TransformationData *pData;
pData = (TransformationData *) TSmalloc(sizeof(TransformationData));
pData->state = STATE_START;
pData->output_buffer = NULL;
pData->output_vio = NULL;
pData->output_reader = NULL;
pData->foo = new std::string;
pData->foo.assign("bar");
return pData;
}
Or should I use:
Void allocTransformationData(){
TransformationData *pData;
pData = (TransformationData *) TSmalloc(sizeof(TransformationData));
pData->state = STATE_START;
pData->output_buffer = NULL;
pData->output_vio = NULL;
pData->output_reader = NULL;
pData->foo = (std::string*) Tsmalloc(sizeof(std::string));
pData->foo.assign("bar");
return pData;
}
