diff options
| -rw-r--r-- | Makefile.objs | 2 | ||||
| -rwxr-xr-x | configure | 6 | ||||
| -rw-r--r-- | qemu-config.c | 4 | ||||
| -rw-r--r-- | qemu-options.hx | 6 | ||||
| -rw-r--r-- | trace/control.h | 24 | ||||
| -rw-r--r-- | trace/default.c | 21 | ||||
| -rw-r--r-- | trace/simple.c | 10 | ||||
| -rw-r--r-- | trace/simple.h | 8 | ||||
| -rw-r--r-- | vl.c | 17 |
9 files changed, 72 insertions, 26 deletions
diff --git a/Makefile.objs b/Makefile.objs index 4f8b0ed..57a80e6 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -379,6 +379,8 @@ ifneq ($(TRACE_BACKEND),dtrace) trace-obj-y = trace.o endif +trace-nested-$(CONFIG_TRACE_DEFAULT) += default.o + trace-nested-$(CONFIG_TRACE_SIMPLE) += simple.o trace-obj-$(CONFIG_TRACE_SIMPLE) += qemu-timer-common.o @@ -3064,12 +3064,15 @@ bsd) ;; esac +# use default implementation for tracing backend-specific routines +trace_default=yes echo "TRACE_BACKEND=$trace_backend" >> $config_host_mak if test "$trace_backend" = "nop"; then echo "CONFIG_TRACE_NOP=y" >> $config_host_mak fi if test "$trace_backend" = "simple"; then echo "CONFIG_TRACE_SIMPLE=y" >> $config_host_mak + trace_default=no # Set the appropriate trace file. trace_file="\"$trace_file-\" FMT_pid" fi @@ -3086,6 +3089,9 @@ if test "$trace_backend" = "dtrace"; then fi fi echo "CONFIG_TRACE_FILE=$trace_file" >> $config_host_mak +if test "$trace_default" = "yes"; then + echo "CONFIG_TRACE_DEFAULT=y" >> $config_host_mak +fi echo "TOOLS=$tools" >> $config_host_mak echo "ROMS=$roms" >> $config_host_mak diff --git a/qemu-config.c b/qemu-config.c index b64edc9..4f3465d 100644 --- a/qemu-config.c +++ b/qemu-config.c @@ -303,7 +303,6 @@ static QemuOptsList qemu_mon_opts = { }, }; -#ifdef CONFIG_TRACE_SIMPLE static QemuOptsList qemu_trace_opts = { .name = "trace", .implied_opt_name = "trace", @@ -316,7 +315,6 @@ static QemuOptsList qemu_trace_opts = { { /* end of list */ } }, }; -#endif static QemuOptsList qemu_cpudef_opts = { .name = "cpudef", @@ -517,9 +515,7 @@ static QemuOptsList *vm_config_groups[32] = { &qemu_global_opts, &qemu_mon_opts, &qemu_cpudef_opts, -#ifdef CONFIG_TRACE_SIMPLE &qemu_trace_opts, -#endif &qemu_option_rom_opts, &qemu_machine_opts, &qemu_boot_opts, diff --git a/qemu-options.hx b/qemu-options.hx index dcb00b7..2d29933 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2436,17 +2436,19 @@ Normally QEMU loads a configuration file from @var{sysconfdir}/qemu.conf and @var{sysconfdir}/target-@var{ARCH}.conf on startup. The @code{-nodefconfig} option will prevent QEMU from loading these configuration files at startup. ETEXI -#ifdef CONFIG_TRACE_SIMPLE DEF("trace", HAS_ARG, QEMU_OPTION_trace, "-trace\n" " Specify a trace file to log traces to\n", QEMU_ARCH_ALL) STEXI +HXCOMM This line is not accurate, as the option is backend-specific but HX does +HXCOMM not support conditional compilation of text. @item -trace @findex -trace Specify a trace file to log output traces to. + +This option is available only when using the @var{simple} tracing backend. ETEXI -#endif HXCOMM This is the last statement. Insert new options before this line! STEXI diff --git a/trace/control.h b/trace/control.h new file mode 100644 index 0000000..bb54339 --- /dev/null +++ b/trace/control.h @@ -0,0 +1,24 @@ +/* + * Interface for configuring and controlling the state of tracing events. + * + * Copyright (C) 2011 Lluís Vilanova <vilanova@ac.upc.edu> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + */ + +#ifndef TRACE_CONTROL_H +#define TRACE_CONTROL_H + +#include <stdbool.h> + + +/** Initialize the tracing backend. + * + * @file Name of trace output file; may be NULL. + * Corresponds to commandline option "-trace file=...". + * @return Whether the backend could be successfully initialized. + */ +bool trace_backend_init(const char *file); + +#endif /* TRACE_CONTROL_H */ diff --git a/trace/default.c b/trace/default.c new file mode 100644 index 0000000..42fdb6b --- /dev/null +++ b/trace/default.c @@ -0,0 +1,21 @@ +/* + * Default implementation for backend initialization from commandline. + * + * Copyright (C) 2011 Lluís Vilanova <vilanova@ac.upc.edu> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + */ + +#include "trace/control.h" + + +bool trace_backend_init(const char *file) +{ + if (file) { + fprintf(stderr, "error: -trace file=...: " + "option not supported by the selected tracing backend\n"); + return false; + } + return true; +} diff --git a/trace/simple.c b/trace/simple.c index de355e9..369e860 100644 --- a/trace/simple.c +++ b/trace/simple.c @@ -16,6 +16,7 @@ #include <pthread.h> #include "qemu-timer.h" #include "trace.h" +#include "trace/control.h" /** Trace file header event ID */ #define HEADER_EVENT_ID (~(uint64_t)0) /* avoids conflicting with TraceEventIDs */ @@ -330,7 +331,7 @@ void st_flush_trace_buffer(void) flush_trace_file(true); } -bool st_init(const char *file) +bool trace_backend_init(const char *file) { pthread_t thread; pthread_attr_t attr; @@ -346,10 +347,11 @@ bool st_init(const char *file) pthread_sigmask(SIG_SETMASK, &oldset, NULL); if (ret != 0) { - return false; + fprintf(stderr, "warning: unable to initialize simple trace backend\n"); + } else { + atexit(st_flush_trace_buffer); + st_set_trace_file(file); } - atexit(st_flush_trace_buffer); - st_set_trace_file(file); return true; } diff --git a/trace/simple.h b/trace/simple.h index 77633ab..08b9a52 100644 --- a/trace/simple.h +++ b/trace/simple.h @@ -15,7 +15,6 @@ #include <stdbool.h> #include <stdio.h> -#ifdef CONFIG_TRACE_SIMPLE typedef uint64_t TraceEventID; typedef struct { @@ -37,12 +36,5 @@ void st_print_trace_file_status(FILE *stream, fprintf_function stream_printf); void st_set_trace_file_enabled(bool enable); bool st_set_trace_file(const char *file); void st_flush_trace_buffer(void); -bool st_init(const char *file); -#else -static inline bool st_init(const char *file) -{ - return true; -} -#endif /* !CONFIG_TRACE_SIMPLE */ #endif /* TRACE_SIMPLE_H */ @@ -156,7 +156,7 @@ int main(int argc, char **argv) #include "slirp/libslirp.h" #include "trace.h" -#include "trace/simple.h" +#include "trace/control.h" #include "qemu-queue.h" #include "cpus.h" #include "arch_init.h" @@ -2130,7 +2130,6 @@ int main(int argc, char **argv, char **envp) int show_vnc_port = 0; #endif int defconfig = 1; - const char *trace_file = NULL; const char *log_mask = NULL; const char *log_file = NULL; GMemVTable mem_trace = { @@ -2138,6 +2137,7 @@ int main(int argc, char **argv, char **envp) .realloc = realloc_and_trace, .free = free_and_trace, }; + const char *trace_file = NULL; atexit(qemu_run_exit_notifiers); error_set_progname(argv[0]); @@ -2928,14 +2928,15 @@ int main(int argc, char **argv, char **envp) } xen_mode = XEN_ATTACH; break; -#ifdef CONFIG_TRACE_SIMPLE case QEMU_OPTION_trace: + { opts = qemu_opts_parse(qemu_find_opts("trace"), optarg, 0); - if (opts) { - trace_file = qemu_opt_get(opts, "file"); + if (!opts) { + exit(1); } + trace_file = qemu_opt_get(opts, "file"); break; -#endif + } case QEMU_OPTION_readconfig: { int ret = qemu_read_config_file(optarg); @@ -2993,8 +2994,8 @@ int main(int argc, char **argv, char **envp) set_cpu_log(log_mask); } - if (!st_init(trace_file)) { - fprintf(stderr, "warning: unable to initialize simple trace backend\n"); + if (!trace_backend_init(trace_file)) { + exit(1); } /* If no data_dir is specified then try to find it relative to the |