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James Gregory 2013-12-31 11:38:48 +11:00
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03-06.md
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@ -25,72 +25,76 @@ and "link" with "tlink" in Listing 3.4. The same is true of Listing
**LISTING 3.4 PZTIME.BAT**
echo off
rem
rem *** Listing 3.4 ***
rem
rem ***************************************************************
rem * Batch file PZTIME.BAT, which builds and runs the precision *
rem * Zen timer program PZTEST.EXE to time the code named as the *
rem * command-line parameter. Listing 3.1 must be named *
rem * PZTIMER.ASM, and Listing 3.2 must be named PZTEST.ASM. To *
rem * time the code in LST3-3, you'd type the DOS command: *
rem * *
rem * pztime lst3-3 *
rem * *
rem * Note that MASM and LINK must be in the current directory or *
rem * on the current path in order for this batch file to work. *
rem * *
rem * This batch file can be speeded up by assembling PZTIMER.ASM *
rem * once, then removing the lines: *
rem * *
rem * masm pztimer; *
rem * if errorlevel 1 goto errorend *
rem * *
rem * from this file. *
rem * *
rem * By Michael Abrash *
rem ***************************************************************
rem
rem Make sure a file to test was specified.
rem
if not x%1==x goto ckexist
echo ***************************************************************
echo * Please specify a file to test. *
echo ***************************************************************
goto end
rem
rem Make sure the file exists.
rem
:ckexist
if exist %1 goto docopy
echo ***************************************************************
echo * The specified file, "%1," doesn't exist. *
echo ***************************************************************
goto end
rem
rem copy the file to measure to TESTCODE.
rem
:docopy
copy %1 testcode
masm pztest;
if errorlevel 1 goto errorend
masm pztimer;
if errorlevel 1 goto errorend
link pztest+pztimer;
if errorlevel 1 goto errorend
pztest
goto end
:errorend
echo ***************************************************************
echo * An error occurred while building the precision Zen timer. *
echo ***************************************************************
:end
```bat
echo off
rem
rem *** Listing 3.4 ***
rem
rem ***************************************************************
rem * Batch file PZTIME.BAT, which builds and runs the precision *
rem * Zen timer program PZTEST.EXE to time the code named as the *
rem * command-line parameter. Listing 3.1 must be named *
rem * PZTIMER.ASM, and Listing 3.2 must be named PZTEST.ASM. To *
rem * time the code in LST3-3, you'd type the DOS command: *
rem * *
rem * pztime lst3-3 *
rem * *
rem * Note that MASM and LINK must be in the current directory or *
rem * on the current path in order for this batch file to work. *
rem * *
rem * This batch file can be speeded up by assembling PZTIMER.ASM *
rem * once, then removing the lines: *
rem * *
rem * masm pztimer; *
rem * if errorlevel 1 goto errorend *
rem * *
rem * from this file. *
rem * *
rem * By Michael Abrash *
rem ***************************************************************
rem
rem Make sure a file to test was specified.
rem
if not x%1==x goto ckexist
echo ***************************************************************
echo * Please specify a file to test. *
echo ***************************************************************
goto end
rem
rem Make sure the file exists.
rem
:ckexist
if exist %1 goto docopy
echo ***************************************************************
echo * The specified file, "%1," doesn't exist. *
echo ***************************************************************
goto end
rem
rem copy the file to measure to TESTCODE.
rem
:docopy
copy %1 testcode
masm pztest;
if errorlevel 1 goto errorend
masm pztimer;
if errorlevel 1 goto errorend
link pztest+pztimer;
if errorlevel 1 goto errorend
pztest
goto end
:errorend
echo ***************************************************************
echo * An error occurred while building the precision Zen timer. *
echo ***************************************************************
:end
```
Assuming that Listing 3.3 is named LST3-3.ASM and Listing 3.4 is named
PZTIME.BAT, the code in Listing 3.3 would be timed with the command:
pztime LST3-3.ASM
```sh
pztime LST3-3.ASM
```
which performs all assembly and linking, and reports the execution time
of the code in Listing 3.3.
@ -116,7 +120,9 @@ In order to perform any of the timing tests in this book, enter Listing
and enter Listing 3.4 and name it PZTIME.BAT. Then simply enter the
listing you wish to run into the file *filename* and enter the command:
pztime <filename>
```sh
pztime <filename>
```
In fact, that's exactly how I timed each of the listings in this book.
Code fragments you write yourself can be timed in just the same way. If