From d4fce24f3a59eda081cdf2e38e7001591b95d173 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 18 Oct 2013 13:51:11 +0200 Subject: [PATCH] qtest: split configuration of qtest accelerator and chardev qtest uses the icount infrastructure to implement a test-driven vm_clock. This however is not necessary when using -qtest as a "probe" together with a normal TCG-, KVM- or Xen-based virtual machine. Hence, split out the call to configure_icount into a new function that is called only for "-machine accel=qtest"; and disable those commands when running with an accelerator other than qtest. This also fixes an assertion failure with "qemu-system-x86_64 -machine accel=qtest" but no -qtest option. This is a valid case, albeit somewhat weird; nothing will happen in the VM but you'll still be able to interact with the monitor or the GUI. Now that qtest_init is not limited to an int(void) function, change global variables that are not used outside qtest_init to arguments. And finally, cleanup useless parts of include/sysemu/qtest.h. The file is not used at all for user-only emulation, and qtest is not available on Win32 due to its usage of sigwait. Reported-by: Michael S. Tsirkin Reviewed-by: Michael S. Tsirkin Tested-by: Michael S. Tsirkin Signed-off-by: Paolo Bonzini Signed-off-by: Michael S. Tsirkin --- include/sysemu/qtest.h | 25 +++++-------------------- qtest.c | 20 ++++++++++---------- vl.c | 8 +++++--- 3 files changed, 20 insertions(+), 33 deletions(-) diff --git a/include/sysemu/qtest.h b/include/sysemu/qtest.h index 9a0c6b31c8..112a661ac4 100644 --- a/include/sysemu/qtest.h +++ b/include/sysemu/qtest.h @@ -16,38 +16,23 @@ #include "qemu-common.h" -#if !defined(CONFIG_USER_ONLY) extern bool qtest_allowed; -extern const char *qtest_chrdev; -extern const char *qtest_log; static inline bool qtest_enabled(void) { return qtest_allowed; } +int qtest_init_accel(void); +void qtest_init(const char *qtest_chrdev, const char *qtest_log); + static inline int qtest_available(void) { +#ifdef CONFIG_POSIX return 1; -} - -int qtest_init(void); #else -static inline bool qtest_enabled(void) -{ - return false; -} - -static inline int qtest_available(void) -{ - return 0; -} - -static inline int qtest_init(void) -{ return 0; -} - #endif +} #endif diff --git a/qtest.c b/qtest.c index 584c70762a..dcf1301229 100644 --- a/qtest.c +++ b/qtest.c @@ -22,8 +22,6 @@ #define MAX_IRQ 256 -const char *qtest_chrdev; -const char *qtest_log; bool qtest_allowed; static DeviceState *irq_intercept_dev; @@ -406,7 +404,7 @@ static void qtest_process_command(CharDriverState *chr, gchar **words) qtest_send_prefix(chr); qtest_send(chr, "OK\n"); - } else if (strcmp(words[0], "clock_step") == 0) { + } else if (qtest_enabled() && strcmp(words[0], "clock_step") == 0) { int64_t ns; if (words[1]) { @@ -417,7 +415,7 @@ static void qtest_process_command(CharDriverState *chr, gchar **words) qtest_clock_warp(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ns); qtest_send_prefix(chr); qtest_send(chr, "OK %"PRIi64"\n", (int64_t)qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); - } else if (strcmp(words[0], "clock_set") == 0) { + } else if (qtest_enabled() && strcmp(words[0], "clock_set") == 0) { int64_t ns; g_assert(words[1]); @@ -502,13 +500,17 @@ static void qtest_event(void *opaque, int event) } } -int qtest_init(void) +int qtest_init_accel(void) { - CharDriverState *chr; + configure_icount("0"); - g_assert(qtest_chrdev != NULL); + return 0; +} + +void qtest_init(const char *qtest_chrdev, const char *qtest_log) +{ + CharDriverState *chr; - configure_icount("0"); chr = qemu_chr_new("qtest", qtest_chrdev, NULL); qemu_chr_add_handlers(chr, qtest_can_read, qtest_read, qtest_event, chr); @@ -525,6 +527,4 @@ int qtest_init(void) } qtest_chr = chr; - - return 0; } diff --git a/vl.c b/vl.c index 29e566fefa..60dbbcb347 100644 --- a/vl.c +++ b/vl.c @@ -2624,7 +2624,7 @@ static struct { { "tcg", "tcg", tcg_available, tcg_init, &tcg_allowed }, { "xen", "Xen", xen_available, xen_init, &xen_allowed }, { "kvm", "KVM", kvm_available, kvm_init, &kvm_allowed }, - { "qtest", "QTest", qtest_available, qtest_init, &qtest_allowed }, + { "qtest", "QTest", qtest_available, qtest_init_accel, &qtest_allowed }, }; static int configure_accelerator(void) @@ -2836,6 +2836,8 @@ int main(int argc, char **argv, char **envp) QEMUMachine *machine; const char *cpu_model; const char *vga_model = "none"; + const char *qtest_chrdev = NULL; + const char *qtest_log = NULL; const char *pid_file = NULL; const char *incoming = NULL; #ifdef CONFIG_VNC @@ -4043,8 +4045,8 @@ int main(int argc, char **argv, char **envp) configure_accelerator(); - if (!qtest_enabled() && qtest_chrdev) { - qtest_init(); + if (qtest_chrdev) { + qtest_init(qtest_chrdev, qtest_log); } machine_opts = qemu_get_machine_opts(); -- 2.11.4.GIT