Re: [Qemu-devel] [PATCH 4/5] boards: switch machine type list to QTAILQ

["Andreas Färber" <afaerber@suse.de>]

Am 24.02.2012 15:13, schrieb Luiz Capitulino:
> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

Unless this fixes a bug, I'd rather not refactor this as in my head this
is already just object_class_foreach() / object_class_by_name(), similar
to CPUs on my qom-cpu branch.

Andreas

> ---
>  hw/boards.h |    3 ++-
>  vl.c        |   16 ++++++----------
>  2 files changed, 8 insertions(+), 11 deletions(-)
> 
> diff --git a/hw/boards.h b/hw/boards.h
> index 342a774..1eb8314 100644
> --- a/hw/boards.h
> +++ b/hw/boards.h
> @@ -4,6 +4,7 @@
>  #define HW_BOARDS_H
>  
>  #include "qdev.h"
> +#include "qemu-queue.h"
>  
>  typedef void QEMUMachineInitFunc(ram_addr_t ram_size,
>                                   const char *boot_device,
> @@ -28,7 +29,7 @@ typedef struct QEMUMachine {
>      int is_default;
>      const char *default_machine_opts;
>      GlobalProperty *compat_props;
> -    struct QEMUMachine *next;
> +    QTAILQ_ENTRY(QEMUMachine) next;
>  } QEMUMachine;
>  
>  void machine_register(QEMUMachine *m);
> diff --git a/vl.c b/vl.c
> index 9f9927c..4935106 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -1160,24 +1160,20 @@ void pcmcia_info(Monitor *mon)
>  /***********************************************************/
>  /* machine registration */
>  
> -static QEMUMachine *first_machine = NULL;
> +static QTAILQ_HEAD(QEMUMachineHead, QEMUMachine) machine_types = 
> +    QTAILQ_HEAD_INITIALIZER(machine_types);
>  QEMUMachine *current_machine = NULL;
>  
>  void machine_register(QEMUMachine *m)
>  {
> -    QEMUMachine **pm;
> -    pm = &first_machine;
> -    while (*pm != NULL)
> -        pm = &(*pm)->next;
> -    m->next = NULL;
> -    *pm = m;
> +    QTAILQ_INSERT_TAIL(&machine_types, m, next);
>  }
>  
>  static QEMUMachine *machine_find(const char *name)
>  {
>      QEMUMachine *m;
>  
> -    for(m = first_machine; m != NULL; m = m->next) {
> +    QTAILQ_FOREACH(m, &machine_types, next) {
>          if (!strcmp(m->name, name))
>              return m;
>          if (m->alias && !strcmp(m->alias, name))
> @@ -1190,7 +1186,7 @@ QEMUMachine *machine_find_default(void)
>  {
>      QEMUMachine *m;
>  
> -    for(m = first_machine; m != NULL; m = m->next) {
> +    QTAILQ_FOREACH(m, &machine_types, next) {
>          if (m->is_default) {
>              return m;
>          }
> @@ -1203,7 +1199,7 @@ void machine_print_all(void)
>      QEMUMachine *m;
>  
>      printf("Supported machines are:\n");
> -    for (m = first_machine; m != NULL; m = m->next) {
> +    QTAILQ_FOREACH(m, &machine_types, next) {
>          if (m->alias) {
>              printf("%-10s %s (alias of %s)\n", m->alias, m->desc, m->name);
>          }

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