Right, handle the case where the shm prepend history isn't full XD
Tyler Goodlet
parent
d3251a2922
commit
55606cffbb
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@ -37,7 +37,7 @@ from PyQt5.QtGui import QPainterPath
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from ..data._sharedmem import (
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ShmArray,
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open_shm_array,
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# open_shm_array,
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)
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from .._profile import pg_profile_enabled, ms_slower_then
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from ._ohlc import (
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@ -48,7 +48,7 @@ from ._curve import (
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FastAppendCurve,
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)
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from ._compression import (
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ohlc_flatten,
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# ohlc_flatten,
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ds_m4,
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)
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from ..log import get_logger
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@ -103,15 +103,15 @@ def rowarr_to_path(
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)
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def ohlc_flat_view(
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def mk_ohlc_flat_copy(
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ohlc_shm: ShmArray,
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# XXX: we bind this in currently..
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x_basis: np.ndarray,
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# x_basis: np.ndarray,
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# vr: Optional[slice] = None,
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) -> np.ndarray:
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) -> tuple[np.ndarray, np.ndarray]:
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'''
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Return flattened-non-copy view into an OHLC shm array.
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@ -127,8 +127,8 @@ def ohlc_flat_view(
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)
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# breakpoint()
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y = unstructured.flatten()
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x = x_basis[:y.size]
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return x, y
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# x = x_basis[:y.size]
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return y
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class Flow(msgspec.Struct): # , frozen=True):
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@ -151,7 +151,8 @@ class Flow(msgspec.Struct): # , frozen=True):
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render: bool = True # toggle for display loop
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flat: Optional[ShmArray] = None
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x_basis: Optional[np.ndarray] = None
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_iflat: int = 0
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_iflat_last: int = 0
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_iflat_first: int = 0
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_last_uppx: float = 0
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_in_ds: bool = False
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@ -344,7 +345,6 @@ class Flow(msgspec.Struct): # , frozen=True):
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graphics = self.graphics
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if isinstance(graphics, BarItems):
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fields = ['open', 'high', 'low', 'close']
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# if no source data renderer exists create one.
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r = self._src_r
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if not r:
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@ -356,49 +356,11 @@ class Flow(msgspec.Struct): # , frozen=True):
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last_read=read,
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)
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# create a flattened view onto the OHLC array
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# which can be read as a line-style format
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shm = self.shm
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# flat = self.flat = self.shm.unstruct_view(fields)
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self.flat = self.shm.ustruct(fields)
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self._iflat = self.shm._last.value
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# import pdbpp
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# pdbpp.set_trace()
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# assert len(flat._array) == len(self.shm._array[fields])
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x = self.x_basis = (
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np.broadcast_to(
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shm._array['index'][:, None],
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(
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shm._array.size,
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# 4, # only ohlc
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self.flat.shape[1],
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),
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) + np.array([-0.5, 0, 0, 0.5])
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)
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# fshm = self.flat = open_shm_array(
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# f'{self.name}_flat',
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# dtype=flattened.dtype,
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# size=flattened.size,
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# )
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# fshm.push(flattened)
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# print(f'unstruct diff: {time.time() - start}')
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# profiler('read unstr view bars to line')
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# start = self.flat._first.value
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ds_curve_r = Renderer(
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flow=self,
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# just swap in the flat view
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data_t=lambda array: self.flat.array,
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# data_t=partial(
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# ohlc_flat_view,
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# self.shm,
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# ),
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# data_t=lambda array: self.flat.array,
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last_read=read,
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draw_path=partial(
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rowarr_to_path,
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@ -435,12 +397,14 @@ class Flow(msgspec.Struct): # , frozen=True):
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should_line
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and uppx < x_gt
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):
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print('FLIPPING TO BARS')
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should_line = False
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elif (
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not should_line
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and uppx >= x_gt
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):
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print('FLIPPING TO LINE')
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should_line = True
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profiler(f'ds logic complete line={should_line}')
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@ -448,32 +412,98 @@ class Flow(msgspec.Struct): # , frozen=True):
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# do graphics updates
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if should_line:
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fields = ['open', 'high', 'low', 'close']
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if self.flat is None:
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# create a flattened view onto the OHLC array
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# which can be read as a line-style format
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shm = self.shm
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# flat = self.flat = self.shm.unstruct_view(fields)
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self.flat = self.shm.ustruct(fields)
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first = self._iflat_first = self.shm._first.value
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last = self._iflat_last = self.shm._last.value
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# write pushed data to flattened copy
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self.flat[first:last] = rfn.structured_to_unstructured(
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self.shm.array[fields]
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)
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# generate an flat-interpolated x-domain
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self.x_basis = (
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np.broadcast_to(
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shm._array['index'][:, None],
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(
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shm._array.size,
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# 4, # only ohlc
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self.flat.shape[1],
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),
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) + np.array([-0.5, 0, 0, 0.5])
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)
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assert self.flat.any()
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# print(f'unstruct diff: {time.time() - start}')
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# profiler('read unstr view bars to line')
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# start = self.flat._first.value
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# update flatted ohlc copy
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iflat, ishm = self._iflat, self.shm._last.value
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to_update = rfn.structured_to_unstructured(
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self.shm._array[iflat:ishm][fields]
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(
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iflat_first,
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iflat,
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ishm_last,
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ishm_first,
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) = (
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self._iflat_first,
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self._iflat_last,
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self.shm._last.value,
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self.shm._first.value
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)
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# print(to_update)
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self.flat[iflat:ishm][:] = to_update
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# check for shm prepend updates since last read.
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if iflat_first != ishm_first:
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# write newly prepended data to flattened copy
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self.flat[
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ishm_first:iflat_first
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] = rfn.structured_to_unstructured(
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self.shm.array[fields][:iflat_first]
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)
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self._iflat_first = ishm_first
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# # flat = self.flat = self.shm.unstruct_view(fields)
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# self.flat = self.shm.ustruct(fields)
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# # self._iflat_last = self.shm._last.value
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# # self._iflat_first = self.shm._first.value
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# # do an update for the most recent prepend
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# # index
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# iflat = ishm_first
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to_update = rfn.structured_to_unstructured(
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self.shm._array[iflat:ishm_last][fields]
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)
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self.flat[iflat:ishm_last][:] = to_update
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profiler('updated ustruct OHLC data')
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y_flat = self.flat[:ishm]
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x_flat = self.x_basis[:ishm]
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# slice out up-to-last step contents
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y_flat = self.flat[ishm_first:ishm_last]
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x_flat = self.x_basis[ishm_first:ishm_last]
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self._iflat = ishm
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# update local last-index tracking
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self._iflat_last = ishm_last
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# reshape to 1d for graphics rendering
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y = y_flat.reshape(-1)
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x = x_flat.reshape(-1)
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profiler('flattened ustruct OHLC data')
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# do all the same for only in-view data
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y_iv_flat = y_flat[ivl:ivr]
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x_iv_flat = x_flat[ivl:ivr]
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y_iv = y_iv_flat.reshape(-1)
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x_iv = x_iv_flat.reshape(-1)
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profiler('flattened ustruct in-view OHLC data')
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# legacy full-recompute-everytime method
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# x, y = ohlc_flatten(array)
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# x_iv, y_iv = ohlc_flatten(in_view)
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# profiler('flattened OHLC data')
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@ -486,6 +516,7 @@ class Flow(msgspec.Struct): # , frozen=True):
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view_range=(ivl, ivr), # hack
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profiler=profiler,
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)
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curve.show()
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profiler('updated ds curve')
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else:
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