On 03/02/2018 21:44, Richard Henderson wrote:
> On 02/03/2018 07:39 AM, Paolo Bonzini wrote:
>> +/* This function gives an error if an invalid, non-NULL pointer type is
>> passed
>> + * to QEMU_MAKE_LOCKABLE. For optimized builds, we can rely on dead-code
>> elimination
>> + * from the compiler,
On 02/03/2018 07:39 AM, Paolo Bonzini wrote:
> +/* This function gives an error if an invalid, non-NULL pointer type is
> passed
> + * to QEMU_MAKE_LOCKABLE. For optimized builds, we can rely on dead-code
> elimination
> + * from the compiler, and give the errors already at link time.
> + */
> +
QemuLockable is a polymorphic lock type that takes an object and
knows which function to use for locking and unlocking. The
implementation could use C11 _Generic, but since the support is
not very widespread I am instead using __builtin_choose_expr and
__builtin_types_compatible_p, which are alrea
QemuLockable is a polymorphic lock type that takes an object and
knows which function to use for locking and unlocking. The
implementation could use C11 _Generic, but since the support is
not very widespread I am instead using __builtin_choose_expr and
__builtin_types_compatible_p, which are alrea
On 29/01/2018 12:42, Stefan Hajnoczi wrote:
> On Thu, Jan 25, 2018 at 06:59:46PM +0100, Paolo Bonzini wrote:
>> +struct QemuLockable {
>> +void *object;
>> +QemuLockUnlockFunc *lock;
>> +QemuLockUnlockFunc *unlock;
>> +};
> ...
>> +/* In C, compound literals have the lifetime of an auto
On Thu, Jan 25, 2018 at 06:59:46PM +0100, Paolo Bonzini wrote:
> +struct QemuLockable {
> +void *object;
> +QemuLockUnlockFunc *lock;
> +QemuLockUnlockFunc *unlock;
> +};
...
> +/* In C, compound literals have the lifetime of an automatic variable.
> + * In C++ it would be different, bu
On Fri, Jan 26, 2018 at 1:59 AM, Paolo Bonzini wrote:
> QemuLockable is a polymorphic lock type that takes an object and
> knows which function to use for locking and unlocking. The
> implementation could use C11 _Generic, but since the support is
> not very widespread I am instead using __builti
On Fri, Jan 26, 2018 at 1:59 AM, Paolo Bonzini wrote:
> diff --git a/include/qemu/lockable.h b/include/qemu/lockable.h
> new file mode 100644
> index 00..f527d0ddb2
> --- /dev/null
> +++ b/include/qemu/lockable.h
> @@ -0,0 +1,88 @@
> +/*
> + * Polymorphic locking functions (aka poor man te
On 01/25/2018 11:59 AM, Paolo Bonzini wrote:
> QemuLockable is a polymorphic lock type that takes an object and
> knows which function to use for locking and unlocking. The
> implementation could use C11 _Generic, but since the support is
> not very widespread I am instead using __builtin_choose_e
QemuLockable is a polymorphic lock type that takes an object and
knows which function to use for locking and unlocking. The
implementation could use C11 _Generic, but since the support is
not very widespread I am instead using __builtin_choose_expr and
__builtin_types_compatible_p, which are alrea
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