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Add cpu information to the info os command on linux.

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This patch adds cpu information on linux based on /proc/cpuinfo as :
cpus       Listing of all cpus/cores on the system

This patch also reorders the info os commands so that they are listed
in alphabetical order.

gdb/ChangeLog:

	* NEWS: Mention info os cpus support.
	* gdb/nat/linux-osdata.c (linux_xfer_osdata_cpus): New function.
	(struct osdata_type): Add cpus entry, reorder the entries in
	alphabetical order.

gdb/doc/ChangeLog:

	* gdb.texinfo (Operating System Auxiliary Information): Add info os cpus
	documentation, reorder the info os entries in alphabetical order.
This commit is contained in:
Antoine Tremblay 2015-03-25 11:49:05 -04:00
parent 71b30f27af
commit d33279b3bb
5 changed files with 199 additions and 73 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gdb/ChangeLog
View File

@ -1,3 +1,10 @@
2015-03-31 Antoine Tremblay <antoine.tremblay@ericsson.com>
* NEWS: Mention info os cpus support.
* gdb/nat/linux-osdata.c (linux_xfer_osdata_cpus): New function.
(struct osdata_type): Add cpus entry, reorder the entries in
alphabetical order.
2015-03-31 Matthias Klose <doko@ubuntu.com>
* compile/compile.c (compile_to_object): Allow triplets with or

4
gdb/NEWS
View File

@ -3,6 +3,10 @@
*** Changes since GDB 7.9
* The "info os" command on GNU/Linux can now display information on
cpu information :
"info os cpus" Listing of all cpus/cores on the system
* GDB has two new commands: "set serial parity odd|even|none" and
"show serial parity". These allows to set or show parity for the
remote serial I/O.

5
gdb/doc/ChangeLog
View File

@ -1,3 +1,8 @@
2015-03-31 Antoine Tremblay <antoine.tremblay@ericsson.com>
* gdb.texinfo (Operating System Auxiliary Information): Add info os cpus
documentation, reorder the info os entries in alphabetical order.
2015-03-26 Simon Marchi <simon.marchi@ericsson.com>
* gdb.texinfo (GDB/MI Data Manipulation): Fix copy-paste typo in

132
gdb/doc/gdb.texinfo
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@ -10606,6 +10606,40 @@ On @sc{gnu}/Linux, the following values of @var{infotype} are valid:
@anchor{linux info os infotypes}
@table @code
@kindex info os cpus
@item cpus
Display the list of all CPUs/cores. For each CPU/core, @value{GDBN} prints
the available fields from /proc/cpuinfo. For each supported architecture
different fields are available. Two common entries are processor which gives
CPU number and bogomips; a system constant that is calculated during
kernel initialization.
@kindex info os files
@item files
Display the list of open file descriptors on the target. For each
file descriptor, @value{GDBN} prints the identifier of the process
owning the descriptor, the command of the owning process, the value
of the descriptor, and the target of the descriptor.
@kindex info os modules
@item modules
Display the list of all loaded kernel modules on the target. For each
module, @value{GDBN} prints the module name, the size of the module in
bytes, the number of times the module is used, the dependencies of the
module, the status of the module, and the address of the loaded module
in memory.
@kindex info os msg
@item msg
Display the list of all System V message queues on the target. For each
message queue, @value{GDBN} prints the message queue key, the message
queue identifier, the access permissions, the current number of bytes
on the queue, the current number of messages on the queue, the processes
that last sent and received a message on the queue, the user and group
of the owner and creator of the message queue, the times at which a
message was last sent and received on the queue, and the time at which
the message queue was last changed.
@kindex info os processes
@item processes
Display the list of processes on the target. For each process,
@ -10625,28 +10659,13 @@ first by the process group identifier, then by the process identifier,
so that processes belonging to the same process group are grouped together
and the process group leader is listed first.
@kindex info os threads
@item threads
Display the list of threads running on the target. For each thread,
@value{GDBN} prints the identifier of the process that the thread
belongs to, the command of the process, the thread identifier, and the
processor core that it is currently running on. The main thread of a
process is not listed.
@kindex info os files
@item files
Display the list of open file descriptors on the target. For each
file descriptor, @value{GDBN} prints the identifier of the process
owning the descriptor, the command of the owning process, the value
of the descriptor, and the target of the descriptor.
@kindex info os sockets
@item sockets
Display the list of Internet-domain sockets on the target. For each
socket, @value{GDBN} prints the address and port of the local and
remote endpoints, the current state of the connection, the creator of
the socket, the IP address family of the socket, and the type of the
connection.
@kindex info os semaphores
@item semaphores
Display the list of all System V semaphore sets on the target. For each
semaphore set, @value{GDBN} prints the semaphore set key, the semaphore
set identifier, the access permissions, the number of semaphores in the
set, the user and group of the owner and creator of the semaphore set,
and the times at which the semaphore set was operated upon and changed.
@kindex info os shm
@item shm
@ -10658,32 +10677,21 @@ attached to or detached from the region, the current number of live
attaches to the region, and the times at which the region was last
attached to, detach from, and changed.
@kindex info os semaphores
@item semaphores
Display the list of all System V semaphore sets on the target. For each
semaphore set, @value{GDBN} prints the semaphore set key, the semaphore
set identifier, the access permissions, the number of semaphores in the
set, the user and group of the owner and creator of the semaphore set,
and the times at which the semaphore set was operated upon and changed.
@kindex info os sockets
@item sockets
Display the list of Internet-domain sockets on the target. For each
socket, @value{GDBN} prints the address and port of the local and
remote endpoints, the current state of the connection, the creator of
the socket, the IP address family of the socket, and the type of the
connection.
@kindex info os msg
@item msg
Display the list of all System V message queues on the target. For each
message queue, @value{GDBN} prints the message queue key, the message
queue identifier, the access permissions, the current number of bytes
on the queue, the current number of messages on the queue, the processes
that last sent and received a message on the queue, the user and group
of the owner and creator of the message queue, the times at which a
message was last sent and received on the queue, and the time at which
the message queue was last changed.
@kindex info os modules
@item modules
Display the list of all loaded kernel modules on the target. For each
module, @value{GDBN} prints the module name, the size of the module in
bytes, the number of times the module is used, the dependencies of the
module, the status of the module, and the address of the loaded module
in memory.
@kindex info os threads
@item threads
Display the list of threads running on the target. For each thread,
@value{GDBN} prints the identifier of the process that the thread
belongs to, the command of the process, the thread identifier, and the
processor core that it is currently running on. The main thread of a
process is not listed.
@end table
@item info os
@ -31785,28 +31793,30 @@ like this:
@smallexample
@value{GDBP}
-info-os
^done,OSDataTable=@{nr_rows="9",nr_cols="3",
^done,OSDataTable=@{nr_rows="10",nr_cols="3",
hdr=[@{width="10",alignment="-1",col_name="col0",colhdr="Type"@},
@{width="10",alignment="-1",col_name="col1",colhdr="Description"@},
@{width="10",alignment="-1",col_name="col2",colhdr="Title"@}],
body=[item=@{col0="processes",col1="Listing of all processes",
body=[item=@{col0="cpus",col1="Listing of all cpus/cores on the system",
col2="CPUs"@},
item=@{col0="files",col1="Listing of all file descriptors",
col2="File descriptors"@},
item=@{col0="modules",col1="Listing of all loaded kernel modules",
col2="Kernel modules"@},
item=@{col0="msg",col1="Listing of all message queues",
col2="Message queues"@},
item=@{col0="processes",col1="Listing of all processes",
col2="Processes"@},
item=@{col0="procgroups",col1="Listing of all process groups",
col2="Process groups"@},
item=@{col0="threads",col1="Listing of all threads",
col2="Threads"@},
item=@{col0="files",col1="Listing of all file descriptors",
col2="File descriptors"@},
item=@{col0="sockets",col1="Listing of all internet-domain sockets",
col2="Sockets"@},
item=@{col0="shm",col1="Listing of all shared-memory regions",
col2="Shared-memory regions"@},
item=@{col0="semaphores",col1="Listing of all semaphores",
col2="Semaphores"@},
item=@{col0="msg",col1="Listing of all message queues",
col2="Message queues"@},
item=@{col0="modules",col1="Listing of all loaded kernel modules",
col2="Kernel modules"@}]@}
item=@{col0="shm",col1="Listing of all shared-memory regions",
col2="Shared-memory regions"@},
item=@{col0="sockets",col1="Listing of all internet-domain sockets",
col2="Sockets"@},
item=@{col0="threads",col1="Listing of all threads",
col2="Threads"@}]
@value{GDBP}
-info-os processes
^done,OSDataTable=@{nr_rows="190",nr_cols="4",

124
gdb/nat/linux-osdata.c
View File

@ -662,6 +662,104 @@ linux_xfer_osdata_threads (gdb_byte *readbuf,
return len;
}
/* Collect data about the cpus/cores on the system */
static LONGEST
linux_xfer_osdata_cpus (gdb_byte *readbuf,
ULONGEST offset, ULONGEST len)
{
static const char *buf;
static LONGEST len_avail = -1;
static struct buffer buffer;
if (offset == 0)
{
FILE *fp;
int first_item = 1;
if (len_avail != -1 && len_avail != 0)
buffer_free (&buffer);
len_avail = 0;
buf = NULL;
buffer_init (&buffer);
buffer_grow_str (&buffer, "<osdata type=\"cpus\">\n");
fp = gdb_fopen_cloexec ("/proc/cpuinfo", "r");
if (fp != NULL)
{
char buf[8192];
do
{
if (fgets (buf, sizeof (buf), fp))
{
char *key, *value;
int i = 0;
key = strtok (buf, ":");
if (key == NULL)
continue;
value = strtok (NULL, ":");
if (value == NULL)
continue;
while (key[i] != '\t' && key[i] != '\0')
i++;
key[i] = '\0';
i = 0;
while (value[i] != '\t' && value[i] != '\0')
i++;
value[i] = '\0';
if (strcmp (key, "processor") == 0)
{
if (first_item)
buffer_grow_str (&buffer, "<item>");
else
buffer_grow_str (&buffer, "</item><item>");
first_item = 0;
}
buffer_xml_printf (&buffer,
"<column name=\"%s\">%s</column>",
key,
value);
}
}
while (!feof (fp));
if (first_item == 0)
buffer_grow_str (&buffer, "</item>");
fclose (fp);
}
buffer_grow_str0 (&buffer, "</osdata>\n");
buf = buffer_finish (&buffer);
len_avail = strlen (buf);
}
if (offset >= len_avail)
{
/* Done. Get rid of the buffer. */
buffer_free (&buffer);
buf = NULL;
len_avail = 0;
return 0;
}
if (len > len_avail - offset)
len = len_avail - offset;
memcpy (readbuf, buf + offset, len);
return len;
}
/* Collect all the open file descriptors found in /proc and put the details
found about them into READBUF. */
@ -1532,24 +1630,26 @@ struct osdata_type {
char *description;
LONGEST (*getter) (gdb_byte *readbuf, ULONGEST offset, ULONGEST len);
} osdata_table[] = {
{ "cpus", "CPUs", "Listing of all cpus/cores on the system",
linux_xfer_osdata_cpus },
{ "files", "File descriptors", "Listing of all file descriptors",
linux_xfer_osdata_fds },
{ "modules", "Kernel modules", "Listing of all loaded kernel modules",
linux_xfer_osdata_modules },
{ "msg", "Message queues", "Listing of all message queues",
linux_xfer_osdata_msg },
{ "processes", "Processes", "Listing of all processes",
linux_xfer_osdata_processes },
{ "procgroups", "Process groups", "Listing of all process groups",
linux_xfer_osdata_processgroups },
{ "threads", "Threads", "Listing of all threads",
linux_xfer_osdata_threads },
{ "files", "File descriptors", "Listing of all file descriptors",
linux_xfer_osdata_fds },
{ "sockets", "Sockets", "Listing of all internet-domain sockets",
linux_xfer_osdata_isockets },
{ "shm", "Shared-memory regions", "Listing of all shared-memory regions",
linux_xfer_osdata_shm },
{ "semaphores", "Semaphores", "Listing of all semaphores",
linux_xfer_osdata_sem },
{ "msg", "Message queues", "Listing of all message queues",
linux_xfer_osdata_msg },
{ "modules", "Kernel modules", "Listing of all loaded kernel modules",
linux_xfer_osdata_modules },
{ "shm", "Shared-memory regions", "Listing of all shared-memory regions",
linux_xfer_osdata_shm },
{ "sockets", "Sockets", "Listing of all internet-domain sockets",
linux_xfer_osdata_isockets },
{ "threads", "Threads", "Listing of all threads",
linux_xfer_osdata_threads },
{ NULL, NULL, NULL }
};