[20240618]Oracle C functions annotations.txt

[20240618]Oracle C functions annotations.txt

--//网站orafun.info可以查询oracle c functions.Created by Frits Hoogland with a little help from Kamil Stawiarski.
--//可以通过它相识oracle 内部C 函数.实际上可以直接下载相干文件,在当地使用.

https://gitlab.com/FritsHoogland/ora_functions/archive/master/ora_functions-master.tar.gz
https://gitlab.com/FritsHoogland/ora_functions

--//例子:
$ ./lookup.awk kgllkal
kgllkal : kernel generic library cache management library cache lock allocate

--//如果是windows系统,如果安装awk了.可以使用如下:

D:\tools\ora_functions-master>awk -f lookup.awk kgllkal
kgllkal : kernel generic library cache management library cache lock allocate

--//我开始以为我直接使用grep直接查询functions.csv文件,实际环境按照条理构造该文件.通过例子说明:

D:\tools\ora_functions-master>grep -i  kgllkal functions.csv
kgllkal|allocate

--//仅仅看到allocate.实际上看lookup.awk 代码,执行如下

D:\tools\ora_functions-master>grep -E "^k\||^kg\||^kgl\||^kgllk\||^kgllkal" functions.csv
k|kernel
kg|generic
kgl|library cache management
kgllk|library cache lock
kgllkal|allocate

--//拚接起来就是如下内容:

D:\tools\ora_functions-master>grep -E "^k\||^kg\||^kgl\||^kgllk\||^kgllkal" functions.csv| cut -f2 -d"|" | paste -sd" "
kernel generic library cache management library cache lock allocate

D:\tools\ora_functions-master>awk -f lookup.awk  -h
Usage: ./lookup.awk [-w]
= full function name, or part of a function name when used with -w.
-w = wildcard, lookup all functions start with
--//可以使用-w参数,模糊查询,不外无法使用前缀模糊查询.这个由于函数的构造布局决定的.

D:\tools\ora_functions-master>awk -f lookup.awk -w kgllk
kgllk : kernel generic library cache management library cache lock
kgllkdl : kernel generic library cache management library cache lock delete
kgllkds : kernel generic library cache management library cache lock delete state object
kgllkal : kernel generic library cache management library cache lock allocate
(kgllk)a : kernel generic library cache management library cache lock ??
(kgllk)d : kernel generic library cache management library cache lock ??

--//最后两个为不完备的信息,注意末端出现的??.
D:\tools\ora_functions-master>awk -f lookup.awk  kgllka
(kgllk)a : kernel generic library cache management library cache lock ??
--//提示括号内的内容可以查询到kgllk.
--//另外注意函数的大小写.

$ ./lookup.awk -w kglget
kglget : kernel generic library cache management get a lock on an object

$ ./lookup.awk -w kglGetMutex
kglGetMutex : kernel generic library cache management get mutex
--//前者没有找到kglGetMutex.

--//如果pstack的执行效果.例子:

SCOTT@book> select count(*) from emp,emp,dba_objects,dba_objects ;

$ pstack 54305
#0  0x0000000009726543 in qersoFetch ()
#1  0x000000000970b15d in qerjotFetch ()
#2  0x000000000256715f in qergsFetch ()
#3  0x00000000095b5776 in opifch2 ()
#4  0x0000000001ba5c5d in kpoal8 ()
#5  0x00000000095bbdad in opiodr ()
#6  0x00000000097a629f in ttcpip ()
#7  0x000000000186470e in opitsk ()
#8  0x0000000001869235 in opiino ()
#9  0x00000000095bbdad in opiodr ()
#10 0x00000000018607ac in opidrv ()
#11 0x0000000001e3a48f in sou2o ()
#12 0x0000000000a29265 in opimai_real ()
#13 0x0000000001e407ad in ssthrdmain ()
#14 0x0000000000a291d1 in main ()

--//在http://orafun.info/stack/,copy and paste上面内容,表现如下:
Parsed stack:
Discovered stack type: gdb/pstack stack
Parsed gdb/pstack stack:
#0 0x0000000009726543 in qersoFetch ()             query execute rowsource sort fetch from from a sort row source
#1 0x000000000970b15d in qerjotFetch ()            query execute rowsource nested loop outer join tunneling fetch
#2 0x000000000256715f in qergsFetch ()             query execute rowsource group by sort fetch
#3 0x00000000095b5776 in opifch2 ()                oracle program interface oracle side of the fetch interface main routine
#4 0x0000000001ba5c5d in kpoal8 ()                 kernel programmatic interface oracle V8 bundled execution
#5 0x00000000095bbdad in opiodr ()                 oracle program interface oracle code request driver, route the current request
#6 0x00000000097a629f in ttcpip ()                 two task common pipe read/write
#7 0x000000000186470e in opitsk ()                 oracle program interface two task function dispatcher
#8 0x0000000001869235 in opiino ()                 oracle program interface initialize opi
#9 0x00000000095bbdad in opiodr ()                 oracle program interface oracle code request driver, route the current request
#10 0x00000000018607ac in opidrv ()                oracle program interface route current request driver, entry side into two task interface
#11 0x0000000001e3a48f in sou2o ()                 main oracle executable entry point
#12 0x0000000000a29265 in opimai_real ()           oracle program interface main real oracle start point
#13 0x0000000001e407ad in ssthrdmain ()            operating system dependent system main for every thread in a threaded oracle
#14 0x0000000000a291d1 in main ()                  (non oracle)general c starting function

--//如果当地操作可以执行如下:
D:\tools\ora_functions-master>awk "{print $4}" a.txt | tr -d "\r" | xargs -iQ awk -f lookup.awk Q"
qersoFetch : query execute rowsource sort fetch from from a sort row source
qerjotFetch : query execute rowsource nested loop outer join tunneling fetch
qergsFetch : query execute rowsource group by sort fetch
opifch2 : oracle program interface oracle side of the fetch interface main routine
kpoal8 : kernel programmatic interface oracle V8 bundled execution
opiodr : oracle program interface oracle code request driver, route the current request
ttcpip : two task common pipe read/write
opitsk : oracle program interface two task function dispatcher
opiino : oracle program interface initialize opi
opiodr : oracle program interface oracle code request driver, route the current request
opidrv : oracle program interface route current request driver, entry side into two task interface
sou2o : main oracle executable entry point. reads environment var ORACLE_SPAWNED_PROCESS.
opimai_real : oracle program interface main real oracle start point
ssthrdmain : operating system dependent system main for every thread in a threaded oracle
main : (non oracle)general c starting function

--//如果是跟踪文件里面记录的stack信息,可以执行如下:
kglLock()+1406

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