def debug_collect_start(self, requested_size):
     if 1:# have_debug_prints():
         debug_start("gc-collect")
         debug_print()
         debug_print(".----------- Full collection -------------------")
         debug_print("| requested size:",
                     requested_size)

def optimize_loop(metainterp_sd, old_loop_tokens, loop, enable_opts):
    debug_start("jit-optimize")
    try:
        return _optimize_loop(metainterp_sd, old_loop_tokens, loop,
                              enable_opts)
    finally:
        debug_stop("jit-optimize")

def send_loop_to_backend(greenkey, jitdriver_sd, metainterp_sd, loop, type):
    jitdriver_sd.on_compile(metainterp_sd.logger_ops, loop.token, loop.operations, type, greenkey)
    loopname = jitdriver_sd.warmstate.get_location_str(greenkey)
    globaldata = metainterp_sd.globaldata
    loop_token = loop.token
    loop_token.number = n = globaldata.loopnumbering
    globaldata.loopnumbering += 1

    if not we_are_translated():
        show_loop(metainterp_sd, loop)
        loop.check_consistency()

    operations = get_deep_immutable_oplist(loop.operations)
    metainterp_sd.profiler.start_backend()
    debug_start("jit-backend")
    try:
        ops_offset = metainterp_sd.cpu.compile_loop(loop.inputargs, operations, loop.token, name=loopname)
    finally:
        debug_stop("jit-backend")
    metainterp_sd.profiler.end_backend()
    metainterp_sd.stats.add_new_loop(loop)
    if not we_are_translated():
        if type != "entry bridge":
            metainterp_sd.stats.compiled()
        else:
            loop._ignore_during_counting = True
    metainterp_sd.log("compiled new " + type)
    #
    metainterp_sd.logger_ops.log_loop(loop.inputargs, loop.operations, n, type, ops_offset)
    short = loop.token.short_preamble
    if short:
        metainterp_sd.logger_ops.log_short_preamble(short[-1].inputargs, short[-1].operations)
    #
    if metainterp_sd.warmrunnerdesc is not None:  # for tests
        metainterp_sd.warmrunnerdesc.memory_manager.keep_loop_alive(loop.token)

def get_total_memory_linux2(filename):
    debug_start("gc-hardware")
    result = -1.0
    try:
        fd = os.open(filename, os.O_RDONLY, 0644)
        try:
            buf = os.read(fd, 4096)
        finally:
            os.close(fd)
    except OSError:
        pass
    else:
        if buf.startswith('MemTotal:'):
            start = _skipspace(buf, len('MemTotal:'))
            stop = start
            while stop < len(buf) and buf[stop].isdigit():
                stop += 1
            if start < stop:
                result = float(buf[start:stop]) * 1024.0   # assume kB
    if result < 0.0:
        debug_print("get_total_memory() failed")
        result = addressable_size
    else:
        debug_print("memtotal =", result)
        if result > addressable_size:
            result = addressable_size
    debug_stop("gc-hardware")
    return result

 def _dump(self, addr, logname, backend=None):
     debug_start(logname)
     if have_debug_prints():
         #
         if backend is not None:
             debug_print('BACKEND', backend)
         #
         from pypy.jit.backend.hlinfo import highleveljitinfo
         if highleveljitinfo.sys_executable:
             debug_print('SYS_EXECUTABLE', highleveljitinfo.sys_executable)
         else:
             debug_print('SYS_EXECUTABLE', '??')
         #
         HEX = '0123456789ABCDEF'
         dump = []
         src = rffi.cast(rffi.CCHARP, addr)
         for p in range(self.get_relative_pos()):
             o = ord(src[p])
             dump.append(HEX[o >> 4])
             dump.append(HEX[o & 15])
         debug_print('CODE_DUMP',
                     '@%x' % addr,
                     '+0 ',     # backwards compatibility
                     ''.join(dump))
         #
     debug_stop(logname)

def send_bridge_to_backend(jitdriver_sd, metainterp_sd, faildescr, inputargs, operations, original_loop_token):
    n = metainterp_sd.cpu.get_fail_descr_number(faildescr)
    if not we_are_translated():
        show_procedures(metainterp_sd)
        seen = dict.fromkeys(inputargs)
        TreeLoop.check_consistency_of_branch(operations, seen)
    if metainterp_sd.warmrunnerdesc is not None:
        hooks = metainterp_sd.warmrunnerdesc.hooks
        debug_info = JitDebugInfo(
            jitdriver_sd, metainterp_sd.logger_ops, original_loop_token, operations, "bridge", fail_descr_no=n
        )
        hooks.before_compile_bridge(debug_info)
    else:
        hooks = None
        debug_info = None
    operations = get_deep_immutable_oplist(operations)
    metainterp_sd.profiler.start_backend()
    debug_start("jit-backend")
    try:
        asminfo = do_compile_bridge(metainterp_sd, faildescr, inputargs, operations, original_loop_token)
    finally:
        debug_stop("jit-backend")
    metainterp_sd.profiler.end_backend()
    if hooks is not None:
        debug_info.asminfo = asminfo
        hooks.after_compile_bridge(debug_info)
    if not we_are_translated():
        metainterp_sd.stats.compiled()
    metainterp_sd.log("compiled new bridge")
    #
    if asminfo is not None:
        ops_offset = asminfo.ops_offset
    else:
        ops_offset = None
    metainterp_sd.logger_ops.log_bridge(inputargs, operations, n, ops_offset)

def send_loop_to_backend(metainterp_sd, loop, type):
    globaldata = metainterp_sd.globaldata
    loop_token = loop.token
    loop_token.number = n = globaldata.loopnumbering
    globaldata.loopnumbering += 1

    metainterp_sd.logger_ops.log_loop(loop.inputargs, loop.operations, n, type)
    if not we_are_translated():
        show_loop(metainterp_sd, loop)
        loop.check_consistency()
    metainterp_sd.profiler.start_backend()
    debug_start("jit-backend")
    try:
        metainterp_sd.cpu.compile_loop(loop.inputargs, loop.operations,
                                       loop.token)
    finally:
        debug_stop("jit-backend")
    metainterp_sd.profiler.end_backend()
    metainterp_sd.stats.add_new_loop(loop)
    if not we_are_translated():
        if type != "entry bridge":
            metainterp_sd.stats.compiled()
        else:
            loop._ignore_during_counting = True
    metainterp_sd.log("compiled new " + type)

 def f(x):
     debug_start("mycat")
     debug_print("foo", 2, "bar", x)
     debug_stop("mycat")
     debug_flush() # does nothing
     debug_offset() # should not explode at least
     return have_debug_prints()

    def set_nursery_size(self, newsize):
        debug_start("gc-set-nursery-size")
        if newsize < self.min_nursery_size:
            newsize = self.min_nursery_size
        if newsize > self.space_size // 2:
            newsize = self.space_size // 2

        # Compute the new bounds for how large young objects can be
        # (larger objects are allocated directly old).   XXX adjust
        self.nursery_size = newsize
        self.largest_young_fixedsize = self.get_young_fixedsize(newsize)
        self.largest_young_var_basesize = self.get_young_var_basesize(newsize)
        scale = 0
        while (self.min_nursery_size << (scale+1)) <= newsize:
            scale += 1
        self.nursery_scale = scale
        debug_print("nursery_size =", newsize)
        debug_print("largest_young_fixedsize =",
                    self.largest_young_fixedsize)
        debug_print("largest_young_var_basesize =",
                    self.largest_young_var_basesize)
        debug_print("nursery_scale =", scale)
        # we get the following invariant:
        assert self.nursery_size >= (self.min_nursery_size << scale)

        # Force a full collect to remove the current nursery whose size
        # no longer matches the bounds that we just computed.  This must
        # be done after changing the bounds, because it might re-create
        # a new nursery (e.g. if it invokes finalizers).
        self.semispace_collect()
        debug_stop("gc-set-nursery-size")

def get_L2cache_linux2(filename="/proc/cpuinfo"):
    debug_start("gc-hardware")
    L2cache = sys.maxint
    try:
        fd = os.open(filename, os.O_RDONLY, 0644)
        try:
            data = []
            while True:
                buf = os.read(fd, 4096)
                if not buf:
                    break
                data.append(buf)
        finally:
            os.close(fd)
    except OSError:
        pass
    else:
        data = ''.join(data)
        linepos = 0
        while True:
            start = _findend(data, '\ncache size', linepos)
            if start < 0:
                break    # done
            linepos = _findend(data, '\n', start)
            if linepos < 0:
                break    # no end-of-line??
            # *** data[start:linepos] == "   : 2048 KB\n"
            start = _skipspace(data, start)
            if data[start] != ':':
                continue
            # *** data[start:linepos] == ": 2048 KB\n"
            start = _skipspace(data, start + 1)
            # *** data[start:linepos] == "2048 KB\n"
            end = start
            while '0' <= data[end] <= '9':
                end += 1
            # *** data[start:end] == "2048"
            if start == end:
                continue
            number = int(data[start:end])
            # *** data[end:linepos] == " KB\n"
            end = _skipspace(data, end)
            if data[end] not in ('K', 'k'):    # assume kilobytes for now
                continue
            number = number * 1024
            # for now we look for the smallest of the L2 caches of the CPUs
            if number < L2cache:
                L2cache = number

    debug_print("L2cache =", L2cache)
    debug_stop("gc-hardware")

    if L2cache < sys.maxint:
        return L2cache
    else:
        # Print a top-level warning even in non-debug builds
        llop.debug_print(lltype.Void,
            "Warning: cannot find your CPU L2 cache size in /proc/cpuinfo")
        return -1

 def _emergency_initial_block(self, requested_size):
     # xxx before the GC is fully setup, we might get there.  Hopefully
     # we will only allocate a couple of strings, e.g. in read_from_env().
     # Just allocate them raw and leak them.
     debug_start("gc-initial-block")
     debug_print("leaking", requested_size, "bytes")
     debug_stop("gc-initial-block")
     return llmemory.raw_malloc(requested_size)

def optimize_bridge(metainterp_sd, old_loop_tokens, bridge, enable_opts,
                    inline_short_preamble=True, retraced=False):
    debug_start("jit-optimize")
    try:
        return _optimize_bridge(metainterp_sd, old_loop_tokens, bridge,
                                enable_opts,
                                inline_short_preamble, retraced)
    finally:
        debug_stop("jit-optimize")

 def _check_rawsize_alloced(self, size_estimate, can_collect=True):
     self.large_objects_collect_trigger -= size_estimate
     if can_collect and self.large_objects_collect_trigger < 0:
         debug_start("gc-rawsize-collect")
         debug_print("allocated", (self._initial_trigger -
                                   self.large_objects_collect_trigger),
                     "bytes, triggering full collection")
         self.semispace_collect()
         debug_stop("gc-rawsize-collect")

 def disable_noninlinable_function(self, metainterp):
     greenkey = metainterp.greenkey_of_huge_function
     if greenkey is not None:
         cell = self.jit_cell_at_key(greenkey)
         cell.dont_trace_here = True
         debug_start("jit-disableinlining")
         sd = self.warmrunnerdesc.metainterp_sd
         loc = sd.state.get_location_str(greenkey)
         debug_print("disabled inlining", loc)
         debug_stop("jit-disableinlining")

 def log_loop(self, inputargs, operations, number=0, type=None):
     if type is None:
         debug_start("jit-log-noopt-loop")
         self._log_operations(inputargs, operations)
         debug_stop("jit-log-noopt-loop")
     else:
         debug_start("jit-log-opt-loop")
         debug_print("# Loop", number, ":", type,
                     "with", len(operations), "ops")
         self._log_operations(inputargs, operations)
         debug_stop("jit-log-opt-loop")

def get_total_memory_darwin(result):
    debug_start("gc-hardware")
    if result <= 0:
        debug_print("get_total_memory() failed")
        result = addressable_size
    else:
        debug_print("memtotal = ", result)
        if result > addressable_size:
            result = addressable_size
    debug_stop("gc-hardware")
    return result

 def log_bridge(self, inputargs, operations, number=-1):
     if number == -1:
         debug_start("jit-log-noopt-bridge")
         self._log_operations(inputargs, operations)
         debug_stop("jit-log-noopt-bridge")
     else:
         debug_start("jit-log-opt-bridge")
         debug_print("# bridge out of Guard", number,
                     "with", len(operations), "ops")
         self._log_operations(inputargs, operations)
         debug_stop("jit-log-opt-bridge")

 def entry_point(argv):
     x = "got:"
     debug_start  ("mycat")
     if have_debug_prints(): x += "b"
     debug_print    ("foo", 2, "bar", 3)
     debug_start      ("cat2")
     if have_debug_prints(): x += "c"
     debug_print        ("baz")
     debug_stop       ("cat2")
     if have_debug_prints(): x += "d"
     debug_print    ("bok")
     debug_stop   ("mycat")
     if have_debug_prints(): x += "a"
     debug_print("toplevel")
     os.write(1, x + '.\n')
     return 0

 def compile(self):
     # ----
     debug_start('jit-backend-emit_ops')
     if self.nocast:
         self.compute_types()
     self.emit_load_inputargs()
     self.emit_preamble()        
     self.emit_operations(self.cliloop.operations)
     self.emit_branches()
     self.emit_end()
     debug_stop('jit-backend-emit_ops')
     # ----
     debug_start('jit-backend-finish_code')
     res = self.finish_code()
     debug_stop('jit-backend-finish_code')
     return res

def send_bridge_to_backend(metainterp_sd, faildescr, inputargs, operations):
    n = metainterp_sd.cpu.get_fail_descr_number(faildescr)
    metainterp_sd.logger_ops.log_bridge(inputargs, operations, n)
    if not we_are_translated():
        show_loop(metainterp_sd)
        TreeLoop.check_consistency_of(inputargs, operations)
        pass
    metainterp_sd.profiler.start_backend()
    debug_start("jit-backend")
    try:
        metainterp_sd.cpu.compile_bridge(faildescr, inputargs, operations)
    finally:
        debug_stop("jit-backend")
    metainterp_sd.profiler.end_backend()
    if not we_are_translated():
        metainterp_sd.stats.compiled()
    metainterp_sd.log("compiled new bridge")