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Create inferior for ctf target.

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This patch creates inferior when GDB opens a ctf trace data, to be
consistent with tfile target.  A test case is added to test for
live target, tfile and ctf target.

gdb:

2014-02-05  Yao Qi  <yao@codesourcery.com>

	* ctf.c: Include "inferior.h" and "gdbthread.h".
	(CTF_PID): A new macro.
	(ctf_open): Call inferior_appeared and add_thread_silent.
	(ctf_close): Call exit_inferior_silent and set inferior_ptid.
	(ctf_thread_alive): New function.
	(init_ctf_ops): Install ctf_thread_alive to to_thread_alive.

gdb/testsuite:

2014-02-05  Yao Qi  <yao@codesourcery.com>

	* gdb.trace/report.exp (use_collected_data): Test the output
	of "info threads" and "info inferiors".
This commit is contained in:
Yao Qi
2014-01-30 10:09:11 +08:00
parent 66d032ac62
commit de7b289385
4 changed files with 44 additions and 1 deletions
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24
gdb/ctf.c
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@ -26,6 +26,8 @@
#include <sys/stat.h>
#include "exec.h"
#include "completer.h"
#include "inferior.h"
#include "gdbthread.h"
#include <ctype.h>
@ -76,6 +78,8 @@
#define CTF_EVENT_ID_TSV_DEF 5
#define CTF_EVENT_ID_TP_DEF 6
#define CTF_PID (2)
/* The state kept while writing the CTF datastream file. */
struct trace_write_handler
@ -1188,6 +1192,10 @@ ctf_open (char *dirname, int from_tty)
trace_dirname = xstrdup (dirname);
push_target (&ctf_ops);
inferior_appeared (current_inferior (), CTF_PID);
inferior_ptid = pid_to_ptid (CTF_PID);
add_thread_silent (inferior_ptid);
merge_uploaded_trace_state_variables (&uploaded_tsvs);
merge_uploaded_tracepoints (&uploaded_tps);
}
@ -1198,10 +1206,16 @@ ctf_open (char *dirname, int from_tty)
static void
ctf_close (void)
{
int pid;
ctf_destroy ();
xfree (trace_dirname);
trace_dirname = NULL;
pid = ptid_get_pid (inferior_ptid);
inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */
exit_inferior_silent (pid);
trace_reset_local_state ();
}
@ -1725,6 +1739,15 @@ ctf_has_registers (struct target_ops *ops)
return get_traceframe_number () != -1;
}
/* This is the implementation of target_ops method to_thread_alive.
CTF trace data has one thread faked by GDB. */
static int
ctf_thread_alive (struct target_ops *ops, ptid_t ptid)
{
return 1;
}
/* This is the implementation of target_ops method to_traceframe_info.
Iterate the events whose name is "memory", in current
frame, extract memory range information, and return them in
@ -1831,6 +1854,7 @@ Specify the filename of the CTF directory.";
ctf_ops.to_has_stack = ctf_has_stack;
ctf_ops.to_has_registers = ctf_has_registers;
ctf_ops.to_traceframe_info = ctf_traceframe_info;
ctf_ops.to_thread_alive = ctf_thread_alive;
ctf_ops.to_magic = OPS_MAGIC;
}