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Various testing and logging updates

Browse source 
- test tci with Travis
   - enable multiarch testing in Travis
   - default to out-of-tree builds
   - make changing logfile safe via RCU
   - remove redundant tests
   - remove gtester test from docker
   - convert DEBUG_MMAP to tracepoints
   - remove hand rolled glob function
   - trigger tcg re-configure when needed
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-tesing-and-misc-191219-1' into staging

Various testing and logging updates

  - test tci with Travis
  - enable multiarch testing in Travis
  - default to out-of-tree builds
  - make changing logfile safe via RCU
  - remove redundant tests
  - remove gtester test from docker
  - convert DEBUG_MMAP to tracepoints
  - remove hand rolled glob function
  - trigger tcg re-configure when needed

# gpg: Signature made Thu 19 Dec 2019 08:24:08 GMT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-tesing-and-misc-191219-1: (25 commits)
  tests/tcg: ensure we re-configure if configure.sh is updated
  trace: replace hand-crafted pattern_glob with g_pattern_match_simple
  linux-user: convert target_munmap debug to a tracepoint
  linux-user: log page table changes under -d page
  linux-user: add target_mmap_complete tracepoint
  linux-user: convert target_mmap debug to tracepoint
  linux-user: convert target_mprotect debug to tracepoint
  travis.yml: Remove the redundant clang-with-MAIN_SOFTMMU_TARGETS entry
  docker: gtester is no longer used
  Added tests for close and change of logfile.
  Add use of RCU for qemu_logfile.
  qemu_log_lock/unlock now preserves the qemu_logfile handle.
  Add a mutex to guarantee single writer to qemu_logfile handle.
  Cleaned up flow of code in qemu_set_log(), to simplify and clarify.
  Fix double free issue in qemu_set_log_filename().
  ci: build out-of-tree
  travis.yml: Enable builds on arm64, ppc64le and s390x
  tests/test-util-filemonitor: Skip test on non-x86 Travis containers
  tests/hd-geo-test: Skip test when images can not be created
  iotests: Skip test 079 if it is not possible to create large files
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2019-12-20 14:00:49 +00:00
commit f59b31e6d0
47 changed files with 486 additions and 216 deletions
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48
include/qemu/log.h
View file

@ -3,9 +3,16 @@
/* A small part of this API is split into its own header */
#include "qemu/log-for-trace.h"
#include "qemu/rcu.h"
typedef struct QemuLogFile {
struct rcu_head rcu;
FILE *fd;
} QemuLogFile;
/* Private global variable, don't use */
extern FILE *qemu_logfile;
extern QemuLogFile *qemu_logfile;
/*
* The new API:
@ -25,7 +32,16 @@ static inline bool qemu_log_enabled(void)
*/
static inline bool qemu_log_separate(void)
{
return qemu_logfile != NULL && qemu_logfile != stderr;
QemuLogFile *logfile;
bool res = false;
rcu_read_lock();
logfile = atomic_rcu_read(&qemu_logfile);
if (logfile && logfile->fd != stderr) {
res = true;
}
rcu_read_unlock();
return res;
}
#define CPU_LOG_TB_OUT_ASM (1 << 0)
@ -53,14 +69,25 @@ static inline bool qemu_log_separate(void)
* qemu_loglevel is never set when qemu_logfile is unset.
*/
static inline void qemu_log_lock(void)
static inline FILE *qemu_log_lock(void)
{
qemu_flockfile(qemu_logfile);
QemuLogFile *logfile;
rcu_read_lock();
logfile = atomic_rcu_read(&qemu_logfile);
if (logfile) {
qemu_flockfile(logfile->fd);
return logfile->fd;
} else {
return NULL;
}
}
static inline void qemu_log_unlock(void)
static inline void qemu_log_unlock(FILE *fd)
{
qemu_funlockfile(qemu_logfile);
if (fd) {
qemu_funlockfile(fd);
}
rcu_read_unlock();
}
/* Logging functions: */
@ -70,9 +97,14 @@ static inline void qemu_log_unlock(void)
static inline void GCC_FMT_ATTR(1, 0)
qemu_log_vprintf(const char *fmt, va_list va)
{
if (qemu_logfile) {
vfprintf(qemu_logfile, fmt, va);
QemuLogFile *logfile;
rcu_read_lock();
logfile = atomic_rcu_read(&qemu_logfile);
if (logfile) {
vfprintf(logfile->fd, fmt, va);
}
rcu_read_unlock();
}
/* log only if a bit is set on the current loglevel mask: