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#include <stdio.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <unistd.h>
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#include <io/printf_core.h>
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#include <io/printf_core.h>
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#include <futex.h>
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#include <futex.h>
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#include <async.h>
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#include <async.h>
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#include <console.h>
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#include <string.h>
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static atomic_t printf_futex = FUTEX_INITIALIZER;
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static atomic_t printf_futex = FUTEX_INITIALIZER;
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static int vprintf_str_write(const char *str, size_t size, void *data)
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static int vprintf_str_write(const char *str, size_t size, void *stream)
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{
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{
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    size_t offset = 0;
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    size_t prev;
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    count_t chars = 0;
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    while (offset < size) {
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        prev = offset;
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        str_decode(str, &offset, size);
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        console_write(str + prev, offset - prev);
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    size_t wr = fwrite(str, 1, size, (FILE *) stream);
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        chars++;
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    }
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    return chars;
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    return str_nlength(str, wr);
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}
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}
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static int vprintf_wstr_write(const wchar_t *str, size_t size, void *data)
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static int vprintf_wstr_write(const wchar_t *str, size_t size, void *stream)
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{
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{
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    size_t offset = 0;
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    size_t offset = 0;
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    size_t boff;
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    count_t chars = 0;
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    size_t chars = 0;
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    char buf[4];
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    while (offset < size) {
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    while (offset < size) {
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        boff = 0;
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        chr_encode(str[chars], buf, &boff, 4);
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        if (fputc(str[chars], (FILE *) stream) <= 0)
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        console_write(buf, boff);
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            break;
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        chars++;
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        chars++;
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        offset += sizeof(wchar_t);
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        offset += sizeof(wchar_t);
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    }
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    }
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    return chars;
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    return chars;
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}
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}
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/** Print formatted text.
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/** Print formatted text.
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 *
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 * @param stream Output stream
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 * @param fmt   format string
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 * @param fmt    Format string
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 * @param ap    format parameters
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 * @param ap     Format parameters
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 *
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 * \see For more details about format string see printf_core.
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 * \see For more details about format string see printf_core.
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 *
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 */
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 */
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int vprintf(const char *fmt, va_list ap)
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int vfprintf(FILE *stream, const char *fmt, va_list ap)
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{
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{
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    struct printf_spec ps = {
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    struct printf_spec ps = {
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        vprintf_str_write,
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        vprintf_str_write,
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        vprintf_wstr_write,
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        vprintf_wstr_write,
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         NULL
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        stream
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    };
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    };
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    /*
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    /*
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     * Prevent other threads to execute printf_core()
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     * Prevent other threads to execute printf_core()
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     */
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     */
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    futex_down(&printf_futex);
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    futex_down(&printf_futex);
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    /*
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    /*
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     * Prevent other pseudo threads of the same thread
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     * Prevent other fibrils of the same thread
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     * to execute printf_core()
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     * to execute printf_core()
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     */
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     */
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    async_serialize_start();
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    async_serialize_start();
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    int ret = printf_core(fmt, &ps, ap);
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    int ret = printf_core(fmt, &ps, ap);
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    async_serialize_end();
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    async_serialize_end();
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    futex_up(&printf_futex);
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    futex_up(&printf_futex);
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    return ret;
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    return ret;
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}
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}
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/** Print formatted text to stdout.
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 *
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 * @param file Output stream
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 * @param fmt  Format string
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 * @param ap   Format parameters
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 *
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 * \see For more details about format string see printf_core.
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 *
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 */
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int vprintf(const char *fmt, va_list ap)
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{
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    return vfprintf(stdout, fmt, ap);
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}
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/** @}
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/** @}
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 */
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 */