ssingh
bc8f6ced74
Reviewed-on: http://13.234.246.121:3000/Neominds/ossl35vx69/pulls/51 Co-authored-by: siddhant <siddhant.singh@neominds.in> Co-committed-by: siddhant <siddhant.singh@neominds.in>
85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
#include "sysCallStat.h"
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#ifdef MEASURE_SYS_CALLS
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extern KRNL_API_STATS API_STATS[sysCallMax];
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/* "enc", "-pbkdf2 -aes-256-cbc -in plain.txt -out cipher.enc -kfile keyfile.key" */
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void clearSysTableData()
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{
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int i=0;
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for (; i< sysCallMax; i++)
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{
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API_STATS[i].execTimeUsec=0;
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API_STATS[i].sysCallCount=0;
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}
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}
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void sysCallMeasurementTask(const char* cmd, const char* arg)
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{
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sysCallMsrSetData (1, sysCallTaskID);
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shellCmdExec (cmd, arg);
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semBGive(sysCallSemID);
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sysCallMsrSetData (0, 0);
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displayStats();
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}
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void CaptureSysCallMetrics(const char* cmd, const char* arg)
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{
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tsFreq = sysTimestampFreq(); /*Set this once during init and neednot set during every system call execution.*/
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sysCallSemID = semBCreate(SEM_Q_FIFO,SEM_EMPTY);
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if(!sysCallSemID)
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{
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printf("CaptureSysCallMetrics: Failed to create semaphore\n");
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return ;
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}
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clearSysTableData();
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sysCallTaskID= taskSpawn("tSysCallMeasure",
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50, /* priority */
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0, /* options */
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8192, /* stack */
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(FUNCPTR)sysCallMeasurementTask,
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cmd, arg,0,0,0,0,0,0,0,0);
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if(sysCallTaskID == ERROR) /*This is to avoid parent task in block state if taskSpawn fails to create a task.*/
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{
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printf("CaptureSysCallMetrics: Failed to create a task\n");
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return ;
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}
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semBTake(sysCallSemID, WAIT_FOREVER); /*As we crated semaphore with SEM_EMPTY, so it is unavilable and gets blocked here for parent and gets unblcoked when child executes semGive().*/
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semDelete(sysCallSemID);
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}
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void displayStats()
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{
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UINT64 openTimeUsec = 0;
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UINT64 closeTimeUsec = 0;
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UINT64 readTimeUsec = 0;
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UINT64 writeTimeUsec = 0;
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if (tsFreq == 0)
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{
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printf("ERROR: tsFreq is zero\n");
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return;
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}
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openTimeUsec = (API_STATS[openCall].execTimeUsec * 1000000ULL) / (UINT64)tsFreq;
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closeTimeUsec = (API_STATS[closeCall].execTimeUsec * 1000000ULL) / (UINT64)tsFreq;
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readTimeUsec = (API_STATS[readCall].execTimeUsec * 1000000ULL) / (UINT64)tsFreq;
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writeTimeUsec = (API_STATS[writeCall].execTimeUsec * 1000000ULL) / (UINT64)tsFreq;
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printf("------------------------------------------------------------------\n");
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printf("%-15s %-15s %-15s %-20s\n","crypto cmd","system call","Invocations","Total time (USec)");
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printf("------------------------------------------------------------------\n");
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printf("%-15s %-15s %-15u %-20llu\n","enc","open",API_STATS[openCall].sysCallCount,openTimeUsec);
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printf("%-15s %-15s %-15u %-20llu\n","enc","close",API_STATS[closeCall].sysCallCount,closeTimeUsec);
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printf("%-15s %-15s %-15u %-20llu\n","enc","read",API_STATS[readCall].sysCallCount,readTimeUsec);
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printf("%-15s %-15s %-15u %-20llu\n","enc","write",API_STATS[writeCall].sysCallCount,writeTimeUsec);
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printf("------------------------------------------------------------------\n");
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}
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#endif
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