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Speed up service-fd retrieval

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We're using get_service_fd in file engine,
better to make it fast. This patch caches
the limits system provides us, instead of
calling getrlimit() every time.

This patch introduces is_service_fd helper
which will be used instead of get_service_fd
where it make sense.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Cyrill Gorcunov
2012-09-13 14:45:06 +04:00
committed by Pavel Emelyanov
parent b354a09cd7
commit 45cc85eea4
3 changed files with 30 additions and 5 deletions
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12
include/crtools.h
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@@ -100,16 +100,22 @@ struct cr_options {
extern struct cr_options opts;
enum {
LOG_FD_OFF = 1,
enum sfd_type {
SERVICE_FD_MIN,
LOG_FD_OFF,
LOG_DIR_FD_OFF,
IMG_FD_OFF,
SELF_EXE_FD_OFF,
PROC_FD_OFF,
CTL_TTY_OFF,
SERVICE_FD_MAX
};
int get_service_fd(int type);
extern int init_service_fd(void);
extern int get_service_fd(enum sfd_type type);
extern bool is_service_fd(int fd, enum sfd_type type);
/* file descriptors template */
struct cr_fd_desc_tmpl {