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Kernel logs when thread ends

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This commit is contained in:
Gerard Wagener 2010-01-18 16:13:21 +01:00
parent ddf2ede927
commit bd4b19f8a7
3 changed files with 34 additions and 0 deletions
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2
arch/um/include/shared/aha.h
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@ -17,6 +17,7 @@ struct ReplyMessage{
#define EXECVE_MESSAGE 1 #define EXECVE_MESSAGE 1
#define CLONE_MESSAGE 2 #define CLONE_MESSAGE 2
#define EXIT_MESSAGE 3
#ifdef AHA_DEBUG #ifdef AHA_DEBUG
#define AHA_PRINTK(args...) printk(args) #define AHA_PRINTK(args...) printk(args)
#else #else
@ -30,4 +31,5 @@ void aha_handle_insult_messages(struct ReplyMessage *msg, char __user* file,\
char __user* __user* argv); char __user* __user* argv);
void aha_get_reply_message(char* key, struct ReplyMessage *msg); void aha_get_reply_message(char* key, struct ReplyMessage *msg);
void aha_record_sys_clone(int pid, int ppid); void aha_record_sys_clone(int pid, int ppid);
void aha_dump_exits(void);
#endif #endif

30
arch/um/kernel/aha.c
View file

@ -232,3 +232,33 @@ void aha_record_sys_clone(int pid, int ppid)
#undef buf__size #undef buf__size
} }
/* Tracks if a thread exits, aiming to free up pids in the process trees
* Process trees are internally read fronm task_struct
*/
void aha_dump_exits(void)
{
int mode = 0644;
int fd;
struct openflags flg;
char filename[32];
char qn[64];
char buf[16];
flg.w = 1;
flg.c = 1;
if (aha_create_filename((char*)&filename,32)>0){
/* Put message in output queue */
if (snprintf((char*)&qn,64,"out/%s",filename)>0){
if ((fd = os_open_file(qn,flg,mode))>0){
__aha_set_type_tag(fd,(char*)&buf,16,EXIT_MESSAGE);
__aha_dump_pid_ppids(fd,(char*)&buf,16);
__aha_set_done_tag (fd,(char*)&buf,16);
os_close_file(fd);
}
}else{
AHA_PRINTK("record-exit: Could not put filename in output queue\n");
}
}else{
AHA_PRINTK("record-exit: No filename could be generated\n");
}
}

2
arch/um/kernel/process.c
View file

@ -26,6 +26,7 @@
#include "os.h" #include "os.h"
#include "skas.h" #include "skas.h"
#include "tlb.h" #include "tlb.h"
#include "shared/aha.h"
/* /*
* This is a per-cpu array. A processor only modifies its entry and it only * This is a per-cpu array. A processor only modifies its entry and it only
@ -123,6 +124,7 @@ void interrupt_end(void)
void exit_thread(void) void exit_thread(void)
{ {
aha_dump_exits();
} }
void *get_current(void) void *get_current(void)