From 22ea40f4ff072a113fdf96bff10bc81ee063da32 Mon Sep 17 00:00:00 2001 From: Juan Quintela Date: Tue, 26 Jun 2012 17:19:10 +0200 Subject: [PATCH] savevm: Use a struct to pass all handlers This would make easier to add more operations in the next patches. Signed-off-by: Juan Quintela --- savevm.c | 54 +++++++++++++++++++++++++----------------------------- vmstate.h | 7 +++++++ 2 files changed, 32 insertions(+), 29 deletions(-) diff --git a/savevm.c b/savevm.c index a15c163b6e..73626d4ddd 100644 --- a/savevm.c +++ b/savevm.c @@ -1171,10 +1171,7 @@ typedef struct SaveStateEntry { int alias_id; int version_id; int section_id; - SaveSetParamsHandler *set_params; - SaveLiveStateHandler *save_live_state; - SaveStateHandler *save_state; - LoadStateHandler *load_state; + SaveVMHandlers *ops; const VMStateDescription *vmsd; void *opaque; CompatEntry *compat; @@ -1237,10 +1234,11 @@ int register_savevm_live(DeviceState *dev, se = g_malloc0(sizeof(SaveStateEntry)); se->version_id = version_id; se->section_id = global_section_id++; - se->set_params = set_params; - se->save_live_state = save_live_state; - se->save_state = save_state; - se->load_state = load_state; + se->ops = g_malloc0(sizeof(SaveVMHandlers)); + se->ops->set_params = set_params; + se->ops->save_live_state = save_live_state; + se->ops->save_state = save_state; + se->ops->load_state = load_state; se->opaque = opaque; se->vmsd = NULL; se->no_migrate = 0; @@ -1309,6 +1307,7 @@ void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque) if (se->compat) { g_free(se->compat); } + g_free(se->ops); g_free(se); } } @@ -1327,9 +1326,6 @@ int vmstate_register_with_alias_id(DeviceState *dev, int instance_id, se = g_malloc0(sizeof(SaveStateEntry)); se->version_id = vmsd->version_id; se->section_id = global_section_id++; - se->save_live_state = NULL; - se->save_state = NULL; - se->load_state = NULL; se->opaque = opaque; se->vmsd = vmsd; se->alias_id = alias_id; @@ -1524,7 +1520,7 @@ void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) { if (!se->vmsd) { /* Old style */ - return se->load_state(f, se->opaque, version_id); + return se->ops->load_state(f, se->opaque, version_id); } return vmstate_load_state(f, se->vmsd, se->opaque, version_id); } @@ -1532,7 +1528,7 @@ static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) static void vmstate_save(QEMUFile *f, SaveStateEntry *se) { if (!se->vmsd) { /* Old style */ - se->save_state(f, se->opaque); + se->ops->save_state(f, se->opaque); return; } vmstate_save_state(f,se->vmsd, se->opaque); @@ -1569,10 +1565,10 @@ int qemu_savevm_state_begin(QEMUFile *f, int ret; QTAILQ_FOREACH(se, &savevm_handlers, entry) { - if(se->set_params == NULL) { + if (!se->ops || !se->ops->set_params) { continue; } - se->set_params(params, se->opaque); + se->ops->set_params(params, se->opaque); } qemu_put_be32(f, QEMU_VM_FILE_MAGIC); @@ -1581,9 +1577,9 @@ int qemu_savevm_state_begin(QEMUFile *f, QTAILQ_FOREACH(se, &savevm_handlers, entry) { int len; - if (se->save_live_state == NULL) + if (!se->ops || !se->ops->save_live_state) { continue; - + } /* Section type */ qemu_put_byte(f, QEMU_VM_SECTION_START); qemu_put_be32(f, se->section_id); @@ -1596,7 +1592,7 @@ int qemu_savevm_state_begin(QEMUFile *f, qemu_put_be32(f, se->instance_id); qemu_put_be32(f, se->version_id); - ret = se->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); + ret = se->ops->save_live_state(f, QEMU_VM_SECTION_START, se->opaque); if (ret < 0) { qemu_savevm_state_cancel(f); return ret; @@ -1623,9 +1619,9 @@ int qemu_savevm_state_iterate(QEMUFile *f) int ret = 1; QTAILQ_FOREACH(se, &savevm_handlers, entry) { - if (se->save_live_state == NULL) + if (!se->ops || !se->ops->save_live_state) { continue; - + } if (qemu_file_rate_limit(f)) { return 0; } @@ -1634,7 +1630,7 @@ int qemu_savevm_state_iterate(QEMUFile *f) qemu_put_byte(f, QEMU_VM_SECTION_PART); qemu_put_be32(f, se->section_id); - ret = se->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); + ret = se->ops->save_live_state(f, QEMU_VM_SECTION_PART, se->opaque); trace_savevm_section_end(se->section_id); if (ret <= 0) { @@ -1663,15 +1659,15 @@ int qemu_savevm_state_complete(QEMUFile *f) cpu_synchronize_all_states(); QTAILQ_FOREACH(se, &savevm_handlers, entry) { - if (se->save_live_state == NULL) + if (!se->ops || !se->ops->save_live_state) { continue; - + } trace_savevm_section_start(); /* Section type */ qemu_put_byte(f, QEMU_VM_SECTION_END); qemu_put_be32(f, se->section_id); - ret = se->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); + ret = se->ops->save_live_state(f, QEMU_VM_SECTION_END, se->opaque); trace_savevm_section_end(se->section_id); if (ret < 0) { return ret; @@ -1681,9 +1677,9 @@ int qemu_savevm_state_complete(QEMUFile *f) QTAILQ_FOREACH(se, &savevm_handlers, entry) { int len; - if (se->save_state == NULL && se->vmsd == NULL) + if ((!se->ops || !se->ops->save_state) && !se->vmsd) { continue; - + } trace_savevm_section_start(); /* Section type */ qemu_put_byte(f, QEMU_VM_SECTION_FULL); @@ -1711,8 +1707,8 @@ void qemu_savevm_state_cancel(QEMUFile *f) SaveStateEntry *se; QTAILQ_FOREACH(se, &savevm_handlers, entry) { - if (se->save_live_state) { - se->save_live_state(f, -1, se->opaque); + if (se->ops && se->ops->save_live_state) { + se->ops->save_live_state(f, -1, se->opaque); } } } @@ -1765,7 +1761,7 @@ static int qemu_save_device_state(QEMUFile *f) if (se->is_ram) { continue; } - if (se->save_state == NULL && se->vmsd == NULL) { + if ((!se->ops || !se->ops->save_state) && !se->vmsd) { continue; } diff --git a/vmstate.h b/vmstate.h index 5af45e0c12..909af6934d 100644 --- a/vmstate.h +++ b/vmstate.h @@ -31,6 +31,13 @@ typedef void SaveStateHandler(QEMUFile *f, void *opaque); typedef int SaveLiveStateHandler(QEMUFile *f, int stage, void *opaque); typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id); +typedef struct SaveVMHandlers { + SaveSetParamsHandler *set_params; + SaveStateHandler *save_state; + SaveLiveStateHandler *save_live_state; + LoadStateHandler *load_state; +} SaveVMHandlers; + int register_savevm(DeviceState *dev, const char *idstr, int instance_id,